113231939 has 4 divisors (see below), whose sum is σ = 113293224. Its totient is φ = 113170656.

The previous prime is 113231893. The next prime is 113231947. The reversal of 113231939 is 939132311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939132311 = 13 ⋅72240947.

It is a cyclic number.

It is not a de Polignac number, because 113231939 - 2²⁰ = 112183363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113231959) 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, 27782 + ... + 31595.

It is an arithmetic number, because the mean of its divisors is an integer number (28323306).

Almost surely, 2^113231939 is an apocalyptic number.

113231939 is a deficient number, since it is larger than the sum of its proper divisors (61285).

113231939 is an equidigital number, since it uses as much as digits as its factorization.

113231939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61284.

The product of its digits is 4374, while the sum is 32.

The square root of 113231939 is about 10641.0497132567. The cubic root of 113231939 is about 483.7893623311.

The spelling of 113231939 in words is "one hundred thirteen million, two hundred thirty-one thousand, nine hundred thirty-nine".