Permutable prime
131 is prime. So is every rearrangement of its digits: 113 and 311. A prime that stays prime under every digit permutation is a permutable prime.
A catalog, with references and pictures
131
is amazing
On makers.dev episode 131, Christian said that making this site would now be unremarkable. Last episode it would have been remarkable. That gap is the point.
Chile calls 131
In Chile, 131 is the SAMU ambulance number. 132 is fire. 133 is police.
A 131-foot Khan
The Genghis Khan Equestrian Statue at Tsonjin Boldog, east of Ulaanbaatar, is 40 metres tall. That is about 131 feet. It is the tallest equestrian statue in the world.
Wikipedia: Equestrian statue of Genghis Khan. Photo: Vaiz Ha, Wikimedia Commons.
The 32nd prime
131 is the 32nd prime number. It is also a Sophie Germain prime, a palindromic prime, a Chen prime, and an Ulam number. It is the sum of three consecutive primes: 41 + 43 + 47.
Full reptend
In base 10, 131 is a full reptend prime. The decimal for 1/131 repeats a 130-digit cycle before it starts over.
US 131
US Highway 131 runs about 270 miles, almost all of it in Michigan, from rural Indiana up toward the Straits of Mackinac.
Wikipedia: U.S. Route 131. Shield: Wikimedia Commons.
Psalm 131
Psalm 131 is short. In the King James Version it begins, "Lord, my heart is not haughty." In Latin it is Domine non est exaltatum cor meum.
STS-131
NASA Space Shuttle Discovery flew STS-131 to the International Space Station. Launch was 5 April 2010. Landing was 20 April 2010 at Kennedy Space Center.
Wikipedia: STS-131. Photo: NASA, Wikimedia Commons.
Fiat 131
Fiat built the 131 from 1974 to 1984. It debuted at the Turin Motor Show as a mid-size family car, in two-door, four-door, and estate forms.
Wikipedia: Fiat 131. Photo: Wikimedia Commons.
131 Vala
131 Vala is a main-belt asteroid. C. H. F. Peters found it on 24 May 1873. The name comes from völva, a prophetess in Norse paganism.
Emarosa, 131
131 is the fourth studio album by the American rock band Emarosa. Hopeless Records released it on 8 July 2016.
Year 131
AD 131 was the Year of the Consulship of Laenas and Rufinus. People at the time did not call it 131. That label came later.