231989604 has 48 divisors (see below), whose sum is σ = 674881536. Its totient is φ = 60256800.

The previous prime is 231989579. The next prime is 231989609. The reversal of 231989604 is 406989132.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (231989609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124612 + ... + 126459.

It is an arithmetic number, because the mean of its divisors is an integer number (14060032).

Almost surely, 2^231989604 is an apocalyptic number.

It is an amenable number.

231989604 is an abundant number, since it is smaller than the sum of its proper divisors (442891932).

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

231989604 is a wasteful number, since it uses less digits than its factorization.

231989604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251096 (or 251094 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 231989604 is about 15231.2049424857. The cubic root of 231989604 is about 614.4541868950.

The spelling of 231989604 in words is "two hundred thirty-one million, nine hundred eighty-nine thousand, six hundred four".