23131023020 has 24 divisors (see below), whose sum is σ = 55514455584. Its totient is φ = 7930636416.

The previous prime is 23131023011. The next prime is 23131023037. The reversal of 23131023020 is 2032013132.

It is a self number, because there is not a number n which added to its sum of digits gives 23131023020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82610657 + ... + 82610936.

It is an arithmetic number, because the mean of its divisors is an integer number (2313102316).

Almost surely, 2^23131023020 is an apocalyptic number.

23131023020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23131023020 is an abundant number, since it is smaller than the sum of its proper divisors (32383432564).

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

23131023020 is a wasteful number, since it uses less digits than its factorization.

23131023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165221609 (or 165221607 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 23131023020 its reverse (2032013132), we get a palindrome (25163036152).

The spelling of 23131023020 in words is "twenty-three billion, one hundred thirty-one million, twenty-three thousand, twenty".