231304388304 has 80 divisors (see below), whose sum is σ = 653016489984. Its totient is φ = 69967651200.

The previous prime is 231304388267. The next prime is 231304388321. The reversal of 231304388304 is 403883403132.

It is a super-2 number, since 2×231304388304² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91792 + ... + 686319.

Almost surely, 2^231304388304 is an apocalyptic number.

231304388304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231304388304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326508244992).

231304388304 is an abundant number, since it is smaller than the sum of its proper divisors (421712101680).

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

231304388304 is a wasteful number, since it uses less digits than its factorization.

231304388304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778696 (or 778690 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 39.

The spelling of 231304388304 in words is "two hundred thirty-one billion, three hundred four million, three hundred eighty-eight thousand, three hundred four".