231039408 has 20 divisors (see below), whose sum is σ = 596851928. Its totient is φ = 77013120.

The previous prime is 231039397. The next prime is 231039421. The reversal of 231039408 is 804930132.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2406613 + ... + 2406708.

Almost surely, 2^231039408 is an apocalyptic number.

It is an amenable number.

231039408 is an abundant number, since it is smaller than the sum of its proper divisors (365812520).

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

231039408 is a wasteful number, since it uses less digits than its factorization.

231039408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4813332 (or 4813326 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 231039408 is about 15199.9805263033. The cubic root of 231039408 is about 613.6141336573.

The spelling of 231039408 in words is "two hundred thirty-one million, thirty-nine thousand, four hundred eight".