231525132 has 48 divisors (see below), whose sum is σ = 557259360. Its totient is φ = 74760192.

The previous prime is 231525113. The next prime is 231525167.

It is a happy number.

231525132 is nontrivially palindromic in base 10.

231525132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113094 + ... + 115122.

It is an arithmetic number, because the mean of its divisors is an integer number (11609570).

Almost surely, 2^231525132 is an apocalyptic number.

It is an amenable number.

231525132 is an abundant number, since it is smaller than the sum of its proper divisors (325734228).

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

231525132 is a wasteful number, since it uses less digits than its factorization.

231525132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330 (or 2328 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 231525132 is about 15215.9499210532. The cubic root of 231525132 is about 614.0438417202.

The spelling of 231525132 in words is "two hundred thirty-one million, five hundred twenty-five thousand, one hundred thirty-two".