113323131 has 20 divisors (see below), whose sum is σ = 170284752. Its totient is φ = 75102768.

The previous prime is 113323127. The next prime is 113323151. The reversal of 113323131 is 131323311.

It is a happy number.

It is not a de Polignac number, because 113323131 - 2² = 113323127 is a prime.

It is a super-2 number, since 2×113323131² = 25684264039286322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113323121) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9970 + ... + 18056.

Almost surely, 2^113323131 is an apocalyptic number.

113323131 is a deficient number, since it is larger than the sum of its proper divisors (56961621).

113323131 is an equidigital number, since it uses as much as digits as its factorization.

113323131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8272 (or 8263 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 113323131 is about 10645.3337664913. Note that the first 3 decimals coincide. The cubic root of 113323131 is about 483.9192016730.

Adding to 113323131 its reverse (131323311), we get a palindrome (244646442).

The spelling of 113323131 in words is "one hundred thirteen million, three hundred twenty-three thousand, one hundred thirty-one".