113940931 has 4 divisors (see below), whose sum is σ = 122705632. Its totient is φ = 105176232.

The previous prime is 113940923. The next prime is 113940947. The reversal of 113940931 is 139049311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 113940931 - 2³ = 113940923 is a prime.

It is a super-2 number, since 2×113940931² = 25965071514293522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113940893 and 113940902.

It is not an unprimeable number, because it can be changed into a prime (113940031) 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, 4382331 + ... + 4382356.

It is an arithmetic number, because the mean of its divisors is an integer number (30676408).

Almost surely, 2^113940931 is an apocalyptic number.

113940931 is a deficient number, since it is larger than the sum of its proper divisors (8764701).

113940931 is an equidigital number, since it uses as much as digits as its factorization.

113940931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8764700.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 113940931 is about 10674.3117342525. The cubic root of 113940931 is about 484.7969972688.

The spelling of 113940931 in words is "one hundred thirteen million, nine hundred forty thousand, nine hundred thirty-one".