231387304 has 8 divisors (see below), whose sum is σ = 433851210. Its totient is φ = 115693648.

The previous prime is 231387283. The next prime is 231387311. The reversal of 231387304 is 403783132.

It can be written as a sum of positive squares in only one way, i.e., 116683204 + 114704100 = 10802^2 + 10710^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 14461699 + ... + 14461714.

Almost surely, 2^231387304 is an apocalyptic number.

It is an amenable number.

231387304 is a deficient number, since it is larger than the sum of its proper divisors (202463906).

231387304 is a wasteful number, since it uses less digits than its factorization.

231387304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28923419 (or 28923415 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 231387304 is about 15211.4201835332. The cubic root of 231387304 is about 613.9219698043.

The spelling of 231387304 in words is "two hundred thirty-one million, three hundred eighty-seven thousand, three hundred four".