113631 has 12 divisors (see below), whose sum is σ = 176472. Its totient is φ = 64848.

The previous prime is 113623. The next prime is 113647. The reversal of 113631 is 136311.

It is not a de Polignac number, because 113631 - 2³ = 113623 is a prime.

It is a super-2 number, since 2×113631² = 25824008322, which contains 22 as substring.

It is a plaindrome in base 16.

It is a nialpdrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 113631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113621) 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, 240 + ... + 533.

It is an arithmetic number, because the mean of its divisors is an integer number (14706).

2¹¹³⁶³¹ is an apocalyptic number.

113631 is a deficient number, since it is larger than the sum of its proper divisors (62841).

113631 is an equidigital number, since it uses as much as digits as its factorization.

113631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 783 counting only the distinct ones).

The product of its digits is 54, while the sum is 15.

The square root of 113631 is about 337.0919755794. The cubic root of 113631 is about 48.4357032285.

Adding to 113631 its reverse (136311), we get a palindrome (249942).

The spelling of 113631 in words is "one hundred thirteen thousand, six hundred thirty-one".