23131113 has 16 divisors (see below), whose sum is σ = 32609280. Its totient is φ = 14544144.

The previous prime is 23131111. The next prime is 23131181. The reversal of 23131113 is 31113132.

It is not a de Polignac number, because 23131113 - 2¹ = 23131111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23131092 and 23131101.

It is not an unprimeable number, because it can be changed into a prime (23131111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14220 + ... + 15762.

It is an arithmetic number, because the mean of its divisors is an integer number (2038080).

Almost surely, 2^23131113 is an apocalyptic number.

It is an amenable number.

23131113 is a deficient number, since it is larger than the sum of its proper divisors (9478167).

23131113 is a wasteful number, since it uses less digits than its factorization.

23131113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828.

The product of its digits is 54, while the sum is 15.

The square root of 23131113 is about 4809.4815728933. The cubic root of 23131113 is about 284.9260626915.

Adding to 23131113 its reverse (31113132), we get a palindrome (54244245).

The spelling of 23131113 in words is "twenty-three million, one hundred thirty-one thousand, one hundred thirteen".