231056772 has 24 divisors (see below), whose sum is σ = 540144192. Its totient is φ = 76874400.

The previous prime is 231056737. The next prime is 231056773. The reversal of 231056772 is 277650132.

It is not an unprimeable number, because it can be changed into a prime (231056773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11304 + ... + 24287.

It is an arithmetic number, because the mean of its divisors is an integer number (22506008).

Almost surely, 2^231056772 is an apocalyptic number.

It is an amenable number.

231056772 is an abundant number, since it is smaller than the sum of its proper divisors (309087420).

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

231056772 is a wasteful number, since it uses less digits than its factorization.

231056772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36139 (or 36137 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 231056772 is about 15200.5517005140. The cubic root of 231056772 is about 613.6295055355.

The spelling of 231056772 in words is "two hundred thirty-one million, fifty-six thousand, seven hundred seventy-two".