113660631 has 16 divisors (see below), whose sum is σ = 192441600. Its totient is φ = 64948824.

The previous prime is 113660611. The next prime is 113660639. The reversal of 113660631 is 136066311.

It is a happy number.

It is not a de Polignac number, because 113660631 - 2⁹ = 113660119 is a prime.

It is a super-2 number, since 2×113660631² = 25837478078636322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 113660595 and 113660604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113660639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300501 + ... + 300878.

It is an arithmetic number, because the mean of its divisors is an integer number (12027600).

Almost surely, 2^113660631 is an apocalyptic number.

113660631 is a deficient number, since it is larger than the sum of its proper divisors (78780969).

113660631 is an equidigital number, since it uses as much as digits as its factorization.

113660631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601395 (or 601389 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 113660631 is about 10661.1739972669. The cubic root of 113660631 is about 484.3991297643.

The spelling of 113660631 in words is "one hundred thirteen million, six hundred sixty thousand, six hundred thirty-one".