23131200020 has 48 divisors (see below), whose sum is σ = 51161362560. Its totient is φ = 8760495744.

The previous prime is 23131200019. The next prime is 23131200143. The reversal of 23131200020 is 2000213132.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23131199968 and 23131200004.

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, 685382 + ... + 718338.

It is an arithmetic number, because the mean of its divisors is an integer number (1065861720).

Almost surely, 2^23131200020 is an apocalyptic number.

23131200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23131200020 is an abundant number, since it is smaller than the sum of its proper divisors (28030162540).

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

23131200020 is a wasteful number, since it uses less digits than its factorization.

23131200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34832 (or 34830 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 23131200020 its reverse (2000213132), we get a palindrome (25131413152).

The spelling of 23131200020 in words is "twenty-three billion, one hundred thirty-one million, two hundred thousand, twenty".