23131304120 has 32 divisors (see below), whose sum is σ = 52050323520. Its totient is φ = 9251652480.

The previous prime is 23131304117. The next prime is 23131304149. The reversal of 23131304120 is 2140313132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23131304092 and 23131304101.

It is a congruent number.

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, 561425 + ... + 601215.

It is an arithmetic number, because the mean of its divisors is an integer number (1626572610).

Almost surely, 2^23131304120 is an apocalyptic number.

23131304120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23131304120 is an abundant number, since it is smaller than the sum of its proper divisors (28919019400).

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

23131304120 is a wasteful number, since it uses less digits than its factorization.

23131304120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54335 (or 54331 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23131304120 its reverse (2140313132), we get a palindrome (25271617252).

The spelling of 23131304120 in words is "twenty-three billion, one hundred thirty-one million, three hundred four thousand, one hundred twenty".