231985924 has 6 divisors (see below), whose sum is σ = 405975374. Its totient is φ = 115992960.

The previous prime is 231985921. The next prime is 231985979. The reversal of 231985924 is 429589132.

231985924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 216619524 + 15366400 = 14718^2 + 3920^2 .

It is not an unprimeable number, because it can be changed into a prime (231985921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28998237 + ... + 28998244.

Almost surely, 2^231985924 is an apocalyptic number.

It is an amenable number.

231985924 is a deficient number, since it is larger than the sum of its proper divisors (173989450).

231985924 is a wasteful number, since it uses less digits than its factorization.

231985924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57996485 (or 57996483 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 231985924 is about 15231.0841373817. The cubic root of 231985924 is about 614.4509378940.

The spelling of 231985924 in words is "two hundred thirty-one million, nine hundred eighty-five thousand, nine hundred twenty-four".