131956957 has 32 divisors (see below), whose sum is σ = 160312320. Its totient is φ = 107205120.

The previous prime is 131956949. The next prime is 131956963. The reversal of 131956957 is 759659131.

It is not a de Polignac number, because 131956957 - 2³ = 131956949 is a prime.

It is a super-3 number, since 3×131956957³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131956967) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 466138 + ... + 466420.

It is an arithmetic number, because the mean of its divisors is an integer number (5009760).

Almost surely, 2^131956957 is an apocalyptic number.

It is an amenable number.

131956957 is a deficient number, since it is larger than the sum of its proper divisors (28355363).

131956957 is a wasteful number, since it uses less digits than its factorization.

131956957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433.

The product of its digits is 255150, while the sum is 46.

The square root of 131956957 is about 11487.2519342095. The cubic root of 131956957 is about 509.1089876146.

The spelling of 131956957 in words is "one hundred thirty-one million, nine hundred fifty-six thousand, nine hundred fifty-seven".