23013122131031 has 4 divisors (see below), whose sum is σ = 23146145958552. Its totient is φ = 22880098303512.

The previous prime is 23013122130961. The next prime is 23013122131033. The reversal of 23013122131031 is 13013122131032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23013122131031 - 2²² = 23013117936727 is a prime.

It is a super-2 number, since 2×23013122131031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23013122130988 and 23013122131006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23013122131033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66511913501 + ... + 66511913846.

It is an arithmetic number, because the mean of its divisors is an integer number (5786536489638).

Almost surely, 2^{23013122131031} is an apocalyptic number.

23013122131031 is a deficient number, since it is larger than the sum of its proper divisors (133023827521).

23013122131031 is a wasteful number, since it uses less digits than its factorization.

23013122131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133023827520.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 23013122131031 its reverse (13013122131032), we get a palindrome (36026244262063).

Subtracting from 23013122131031 its reverse (13013122131032), we obtain a palindrome (9999999999999).

The spelling of 23013122131031 in words is "twenty-three trillion, thirteen billion, one hundred twenty-two million, one hundred thirty-one thousand, thirty-one".