23131123013 has 12 divisors (see below), whose sum is σ = 24442460640. Its totient is φ = 21886915176.

The previous prime is 23131123003. The next prime is 23131123021. The reversal of 23131123013 is 31032113132.

It is not a de Polignac number, because 23131123013 - 2⁴ = 23131122997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131123003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259808 + ... + 337286.

It is an arithmetic number, because the mean of its divisors is an integer number (2036871720).

Almost surely, 2^23131123013 is an apocalyptic number.

It is an amenable number.

23131123013 is a deficient number, since it is larger than the sum of its proper divisors (1311337627).

23131123013 is an equidigital number, since it uses as much as digits as its factorization.

23131123013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78344 (or 78325 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 23131123013 its reverse (31032113132), we get a palindrome (54163236145).

The spelling of 23131123013 in words is "twenty-three billion, one hundred thirty-one million, one hundred twenty-three thousand, thirteen".