20131310023 has 6 divisors (see below), whose sum is σ = 22127803712. Its totient is φ = 18301190820.

The previous prime is 20131309997. The next prime is 20131310029. The reversal of 20131310023 is 32001313102.

It is not a de Polignac number, because 20131310023 - 2³³ = 11541375431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20131309979 and 20131310006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131310029) 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, 83187111 + ... + 83187352.

Almost surely, 2^20131310023 is an apocalyptic number.

20131310023 is a deficient number, since it is larger than the sum of its proper divisors (1996493689).

20131310023 is a wasteful number, since it uses less digits than its factorization.

20131310023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166374485 (or 166374474 counting only the distinct ones).

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

Adding to 20131310023 its reverse (32001313102), we get a palindrome (52132623125).

The spelling of 20131310023 in words is "twenty billion, one hundred thirty-one million, three hundred ten thousand, twenty-three".