23131330313 has 24 divisors (see below), whose sum is σ = 30309648768. Its totient is φ = 17225125632.

The previous prime is 23131330309. The next prime is 23131330319. The reversal of 23131330313 is 31303313132.

It is not a de Polignac number, because 23131330313 - 2² = 23131330309 is a prime.

It is a super-2 number, since 2×23131330313² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23131330319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 554981 + ... + 595202.

It is an arithmetic number, because the mean of its divisors is an integer number (1262902032).

Almost surely, 2^23131330313 is an apocalyptic number.

It is an amenable number.

23131330313 is a deficient number, since it is larger than the sum of its proper divisors (7178318455).

23131330313 is a wasteful number, since it uses less digits than its factorization.

23131330313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150233 (or 1150220 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 23131330313 its reverse (31303313132), we get a palindrome (54434643445).

The spelling of 23131330313 in words is "twenty-three billion, one hundred thirty-one million, three hundred thirty thousand, three hundred thirteen".