113451631 has 4 divisors (see below), whose sum is σ = 115374600. Its totient is φ = 111528664.

The previous prime is 113451623. The next prime is 113451647. The reversal of 113451631 is 136154311.

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 113451631 - 2³ = 113451623 is a prime.

It is a super-2 number, since 2×113451631² = 25742545153120322, 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 = 113451596 and 113451605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113451671) 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, 961396 + ... + 961513.

It is an arithmetic number, because the mean of its divisors is an integer number (28843650).

Almost surely, 2^113451631 is an apocalyptic number.

113451631 is a deficient number, since it is larger than the sum of its proper divisors (1922969).

113451631 is an equidigital number, since it uses as much as digits as its factorization.

113451631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922968.

The product of its digits is 1080, while the sum is 25.

The square root of 113451631 is about 10651.3675647778. The cubic root of 113451631 is about 484.1020420393.

The spelling of 113451631 in words is "one hundred thirteen million, four hundred fifty-one thousand, six hundred thirty-one".