10113931 has 4 divisors (see below), whose sum is σ = 10252552. Its totient is φ = 9975312.

The previous prime is 10113923. The next prime is 10113941. The reversal of 10113931 is 13931101.

It is a happy number.

10113931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13931101 = 73 ⋅190837.

It is a cyclic number.

It is not a de Polignac number, because 10113931 - 2³ = 10113923 is a prime.

It is a super-2 number, since 2×10113931² = 204583200545522, 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 = 10113899 and 10113908.

It is not an unprimeable number, because it can be changed into a prime (10113911) 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, 69201 + ... + 69346.

It is an arithmetic number, because the mean of its divisors is an integer number (2563138).

Almost surely, 2^10113931 is an apocalyptic number.

10113931 is a deficient number, since it is larger than the sum of its proper divisors (138621).

10113931 is an equidigital number, since it uses as much as digits as its factorization.

10113931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138620.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 10113931 is about 3180.2407141599. The cubic root of 10113931 is about 216.2585709457.

The spelling of 10113931 in words is "ten million, one hundred thirteen thousand, nine hundred thirty-one".