131957265 has 16 divisors (see below), whose sum is σ = 230325696. Its totient is φ = 63979200.

The previous prime is 131957257. The next prime is 131957269. The reversal of 131957265 is 562759131.

It is not a de Polignac number, because 131957265 - 2³ = 131957257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131957269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399706 + ... + 400035.

It is an arithmetic number, because the mean of its divisors is an integer number (14395356).

Almost surely, 2^131957265 is an apocalyptic number.

131957265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131957265 is a deficient number, since it is larger than the sum of its proper divisors (98368431).

131957265 is a wasteful number, since it uses less digits than its factorization.

131957265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799760.

The product of its digits is 56700, while the sum is 39.

The square root of 131957265 is about 11487.2653403671. The cubic root of 131957265 is about 509.1093837171.

The spelling of 131957265 in words is "one hundred thirty-one million, nine hundred fifty-seven thousand, two hundred sixty-five".