23313321131 has 4 divisors (see below), whose sum is σ = 23321171064. Its totient is φ = 23305471200.

The previous prime is 23313321113. The next prime is 23313321133. The reversal of 23313321131 is 13112331332.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23313321131 is a prime.

It is a super-2 number, since 2×23313321131² (a number of 22 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 = 23313321097 and 23313321106.

It is not an unprimeable number, because it can be changed into a prime (23313321133) 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, 3920510 + ... + 3926451.

It is an arithmetic number, because the mean of its divisors is an integer number (5830292766).

Almost surely, 2^23313321131 is an apocalyptic number.

23313321131 is a deficient number, since it is larger than the sum of its proper divisors (7849933).

23313321131 is an equidigital number, since it uses as much as digits as its factorization.

23313321131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7849932.

The product of its digits is 972, while the sum is 23.

Adding to 23313321131 its reverse (13112331332), we get a palindrome (36425652463).

The spelling of 23313321131 in words is "twenty-three billion, three hundred thirteen million, three hundred twenty-one thousand, one hundred thirty-one".