131597955 has 12 divisors (see below), whose sum is σ = 228103200. Its totient is φ = 70185552.

The previous prime is 131597951. The next prime is 131597959. The reversal of 131597955 is 559795131.

131597955 is a `hidden beast` number, since 1 + 3 + 1 + 597 + 9 + 55 = 666.

It is an interprime number because it is at equal distance from previous prime (131597951) and next prime (131597959).

It is not a de Polignac number, because 131597955 - 2² = 131597951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 2924399 = 131597955 / (1 + 3 + 1 + 5 + 9 + 7 + 9 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 131597955.

It is not an unprimeable number, because it can be changed into a prime (131597951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1462155 + ... + 1462244.

It is an arithmetic number, because the mean of its divisors is an integer number (19008600).

Almost surely, 2^131597955 is an apocalyptic number.

131597955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131597955 is a deficient number, since it is larger than the sum of its proper divisors (96505245).

131597955 is a wasteful number, since it uses less digits than its factorization.

131597955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924410 (or 2924407 counting only the distinct ones).

The product of its digits is 212625, while the sum is 45.

The square root of 131597955 is about 11471.6151870606. The cubic root of 131597955 is about 508.6468744404.

The spelling of 131597955 in words is "one hundred thirty-one million, five hundred ninety-seven thousand, nine hundred fifty-five".