231231304 has 16 divisors (see below), whose sum is σ = 434873520. Its totient is φ = 115265040.

The previous prime is 231231293. The next prime is 231231323. The reversal of 231231304 is 403132132.

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, 41014 + ... + 46309.

It is an arithmetic number, because the mean of its divisors is an integer number (27179595).

Almost surely, 2^231231304 is an apocalyptic number.

It is an amenable number.

231231304 is a deficient number, since it is larger than the sum of its proper divisors (203642216).

231231304 is a wasteful number, since it uses less digits than its factorization.

231231304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87660 (or 87656 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 231231304 is about 15206.2915926270. The cubic root of 231231304 is about 613.7839712241.

Adding to 231231304 its reverse (403132132), we get a palindrome (634363436).

The spelling of 231231304 in words is "two hundred thirty-one million, two hundred thirty-one thousand, three hundred four".