231525012 has 24 divisors (see below), whose sum is σ = 549082912. Its totient is φ = 75909600.

The previous prime is 231524983. The next prime is 231525017. The reversal of 231525012 is 210525132.

231525012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 231525012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231525017) 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, 157414 + ... + 158877.

Almost surely, 2^231525012 is an apocalyptic number.

It is an amenable number.

231525012 is an abundant number, since it is smaller than the sum of its proper divisors (317557900).

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

231525012 is a wasteful number, since it uses less digits than its factorization.

231525012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316359 (or 316357 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 231525012 is about 15215.9459778221. The cubic root of 231525012 is about 614.0437356334.

The spelling of 231525012 in words is "two hundred thirty-one million, five hundred twenty-five thousand, twelve".