113939031 has 4 divisors (see below), whose sum is σ = 151918712. Its totient is φ = 75959352.

The previous prime is 113939027. The next prime is 113939047. The reversal of 113939031 is 130939311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130939311 = 3 ⋅43646437.

It is not a de Polignac number, because 113939031 - 2² = 113939027 is a prime.

It is a super-2 number, since 2×113939031² = 25964205570437922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113939031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113939051) 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, 18989836 + ... + 18989841.

It is an arithmetic number, because the mean of its divisors is an integer number (37979678).

Almost surely, 2^113939031 is an apocalyptic number.

113939031 is a deficient number, since it is larger than the sum of its proper divisors (37979681).

113939031 is an equidigital number, since it uses as much as digits as its factorization.

113939031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37979680.

The product of its (nonzero) digits is 2187, while the sum is 30.

The square root of 113939031 is about 10674.2227351691. Note that the first 3 decimals coincide. The cubic root of 113939031 is about 484.7943025409.

The spelling of 113939031 in words is "one hundred thirteen million, nine hundred thirty-nine thousand, thirty-one".