113000031 has 12 divisors (see below), whose sum is σ = 163343752. Its totient is φ = 75277296.

The previous prime is 113000023. The next prime is 113000033. The reversal of 113000031 is 130000311.

It is not a de Polignac number, because 113000031 - 2³ = 113000023 is a prime.

It is a super-2 number, since 2×113000031² = 25538014012001922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112999977 and 113000022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113000033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10785 + ... + 18501.

Almost surely, 2^113000031 is an apocalyptic number.

113000031 is a deficient number, since it is larger than the sum of its proper divisors (50343721).

113000031 is a wasteful number, since it uses less digits than its factorization.

113000031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9350 (or 9347 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 9.

The square root of 113000031 is about 10630.1472708519. The cubic root of 113000031 is about 483.4588569213.

Adding to 113000031 its reverse (130000311), we get a palindrome (243000342).

The spelling of 113000031 in words is "one hundred thirteen million, thirty-one", and thus it is an aban number.