23312012320 has 48 divisors (see below), whose sum is σ = 55139517720. Its totient is φ = 9313818624.

The previous prime is 23312012291. The next prime is 23312012387. The reversal of 23312012320 is 2321021332.

It can be written as a sum of positive squares in 4 ways, for example, as 10021611664 + 13290400656 = 100108^2 + 115284^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51076 + ... + 221884.

Almost surely, 2^23312012320 is an apocalyptic number.

23312012320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23312012320 is an abundant number, since it is smaller than the sum of its proper divisors (31827505400).

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

23312012320 is a wasteful number, since it uses less digits than its factorization.

23312012320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171677 (or 171669 counting only the distinct ones).

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

Adding to 23312012320 its reverse (2321021332), we get a palindrome (25633033652).

The spelling of 23312012320 in words is "twenty-three billion, three hundred twelve million, twelve thousand, three hundred twenty".