23131321000 has 64 divisors (see below), whose sum is σ = 54149808960. Its totient is φ = 9248680000.

The previous prime is 23131320977. The next prime is 23131321013. The reversal of 23131321000 is 12313132.

It is a super-2 number, since 2×23131321000² (a number of 22 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 4688535 + ... + 4693465.

It is an arithmetic number, because the mean of its divisors is an integer number (846090765).

Almost surely, 2^23131321000 is an apocalyptic number.

23131321000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23131321000 is an abundant number, since it is smaller than the sum of its proper divisors (31018487960).

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

23131321000 is a wasteful number, since it uses less digits than its factorization.

23131321000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9643 (or 9629 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 23131321000 its reverse (12313132), we get a palindrome (23143634132).

It can be divided in two parts, 2313132 and 1000, that added together give a palindrome (2314132).

The spelling of 23131321000 in words is "twenty-three billion, one hundred thirty-one million, three hundred twenty-one thousand".