231351612 has 24 divisors (see below), whose sum is σ = 540772176. Its totient is φ = 76981248.

The previous prime is 231351607. The next prime is 231351661. The reversal of 231351612 is 216153132.

231351612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 9783 + ... + 23630.

It is an arithmetic number, because the mean of its divisors is an integer number (22532174).

Almost surely, 2^231351612 is an apocalyptic number.

It is an amenable number.

231351612 is an abundant number, since it is smaller than the sum of its proper divisors (309420564).

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

231351612 is a wasteful number, since it uses less digits than its factorization.

231351612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33997 (or 33995 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 231351612 is about 15210.2469407962. The cubic root of 231351612 is about 613.8904019103.

The spelling of 231351612 in words is "two hundred thirty-one million, three hundred fifty-one thousand, six hundred twelve".