113431113 has 12 divisors (see below), whose sum is σ = 164457540. Its totient is φ = 75338016.

The previous prime is 113431081. The next prime is 113431117. The reversal of 113431113 is 311134311.

It can be written as a sum of positive squares in 2 ways, for example, as 21040569 + 92390544 = 4587^2 + 9612^2 .

It is not a de Polignac number, because 113431113 - 2⁵ = 113431081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113431117) 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, 21006 + ... + 25847.

It is an arithmetic number, because the mean of its divisors is an integer number (13704795).

Almost surely, 2^113431113 is an apocalyptic number.

It is an amenable number.

113431113 is a deficient number, since it is larger than the sum of its proper divisors (51026427).

113431113 is a wasteful number, since it uses less digits than its factorization.

113431113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47128 (or 47125 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 113431113 is about 10650.4043585209. The cubic root of 113431113 is about 484.0728566074.

Adding to 113431113 its reverse (311134311), we get a palindrome (424565424).

The spelling of 113431113 in words is "one hundred thirteen million, four hundred thirty-one thousand, one hundred thirteen".