23131321103 has 6 divisors (see below), whose sum is σ = 25425336552. Its totient is φ = 21028473620.

The previous prime is 23131321021. The next prime is 23131321139. The reversal of 23131321103 is 30112313132.

It is not a de Polignac number, because 23131321103 - 2⁸ = 23131320847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131321153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95583851 + ... + 95584092.

It is an arithmetic number, because the mean of its divisors is an integer number (4237556092).

Almost surely, 2^23131321103 is an apocalyptic number.

23131321103 is a deficient number, since it is larger than the sum of its proper divisors (2294015449).

23131321103 is a wasteful number, since it uses less digits than its factorization.

23131321103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191167965 (or 191167954 counting only the distinct ones).

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

Adding to 23131321103 its reverse (30112313132), we get a palindrome (53243634235).

The spelling of 23131321103 in words is "twenty-three billion, one hundred thirty-one million, three hundred twenty-one thousand, one hundred three".