231313212304 has 20 divisors (see below), whose sum is σ = 448308244060. Its totient is φ = 115620762240.

The previous prime is 231313212283. The next prime is 231313212331. The reversal of 231313212304 is 403212313132.

It can be written as a sum of positive squares in 2 ways, for example, as 159248883600 + 72064328704 = 399060^2 + 268448^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2186967 + ... + 2290294.

It is an arithmetic number, because the mean of its divisors is an integer number (22415412203).

Almost surely, 2^231313212304 is an apocalyptic number.

It is an amenable number.

231313212304 is a deficient number, since it is larger than the sum of its proper divisors (216995031756).

231313212304 is a wasteful number, since it uses less digits than its factorization.

231313212304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4480498 (or 4480492 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 231313212304 its reverse (403212313132), we get a palindrome (634525525436).

The spelling of 231313212304 in words is "two hundred thirty-one billion, three hundred thirteen million, two hundred twelve thousand, three hundred four".