113257815 has 24 divisors (see below), whose sum is σ = 199187184. Its totient is φ = 54912000.

The previous prime is 113257799. The next prime is 113257817. The reversal of 113257815 is 518752311.

It is not a de Polignac number, because 113257815 - 2⁴ = 113257799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113257817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29386 + ... + 33015.

It is an arithmetic number, because the mean of its divisors is an integer number (8299466).

Almost surely, 2^113257815 is an apocalyptic number.

113257815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

113257815 is a deficient number, since it is larger than the sum of its proper divisors (85929369).

113257815 is a wasteful number, since it uses less digits than its factorization.

113257815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62431 (or 62420 counting only the distinct ones).

The product of its digits is 8400, while the sum is 33.

The square root of 113257815 is about 10642.2655012925. The cubic root of 113257815 is about 483.8262117106.

The spelling of 113257815 in words is "one hundred thirteen million, two hundred fifty-seven thousand, eight hundred fifteen".