131801957 has 8 divisors (see below), whose sum is σ = 151964736. Its totient is φ = 111972672.

The previous prime is 131801947. The next prime is 131802017. The reversal of 131801957 is 759108131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131801957 - 2²⁶ = 64693093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131801927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82523 + ... + 84104.

It is an arithmetic number, because the mean of its divisors is an integer number (18995592).

Almost surely, 2^131801957 is an apocalyptic number.

It is an amenable number.

131801957 is a deficient number, since it is larger than the sum of its proper divisors (20162779).

131801957 is a wasteful number, since it uses less digits than its factorization.

131801957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166747.

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 131801957 is about 11480.5033426240. The cubic root of 131801957 is about 508.9095720568.

The spelling of 131801957 in words is "one hundred thirty-one million, eight hundred one thousand, nine hundred fifty-seven".