23131012120 has 32 divisors (see below), whose sum is σ = 52897975920. Its totient is φ = 9100725120.

The previous prime is 23131012109. The next prime is 23131012159. The reversal of 23131012120 is 2121013132.

It is a junction number, because it is equal to n+sod(n) for n = 23131012094 and 23131012103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4737522 + ... + 4742401.

Almost surely, 2^23131012120 is an apocalyptic number.

23131012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23131012120 is an abundant number, since it is smaller than the sum of its proper divisors (29766963800).

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

23131012120 is a wasteful number, since it uses less digits than its factorization.

23131012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9479995 (or 9479991 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 23131012120 its reverse (2121013132), we get a palindrome (25252025252).

The spelling of 23131012120 in words is "twenty-three billion, one hundred thirty-one million, twelve thousand, one hundred twenty".