131525128 has 32 divisors (see below), whose sum is σ = 282628800. Its totient is φ = 56210112.

The previous prime is 131525071. The next prime is 131525143. The reversal of 131525128 is 821525131.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 131525096 and 131525105.

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, 18126 + ... + 24322.

It is an arithmetic number, because the mean of its divisors is an integer number (8832150).

Almost surely, 2^131525128 is an apocalyptic number.

It is an amenable number.

131525128 is an abundant number, since it is smaller than the sum of its proper divisors (151103672).

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

131525128 is a wasteful number, since it uses less digits than its factorization.

131525128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6589 (or 6585 counting only the distinct ones).

The product of its digits is 2400, while the sum is 28.

The square root of 131525128 is about 11468.4405217100. The cubic root of 131525128 is about 508.5530278420.

The spelling of 131525128 in words is "one hundred thirty-one million, five hundred twenty-five thousand, one hundred twenty-eight".