131487656 has 32 divisors (see below), whose sum is σ = 267419880. Its totient is φ = 60364800.

The previous prime is 131487649. The next prime is 131487691. The reversal of 131487656 is 656784131.

It can be written as a sum of positive squares in 4 ways, for example, as 84015556 + 47472100 = 9166^2 + 6890^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6215 + ... + 17366.

Almost surely, 2^131487656 is an apocalyptic number.

It is an amenable number.

131487656 is an abundant number, since it is smaller than the sum of its proper divisors (135932224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131487656 is a wasteful number, since it uses less digits than its factorization.

131487656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23645 (or 23641 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 131487656 is about 11466.8067045712. The cubic root of 131487656 is about 508.5047270359.

The spelling of 131487656 in words is "one hundred thirty-one million, four hundred eighty-seven thousand, six hundred fifty-six".