113393281 has 16 divisors (see below), whose sum is σ = 123621120. Its totient is φ = 103599360.

The previous prime is 113393263. The next prime is 113393297. The reversal of 113393281 is 182393311.

It is not a de Polignac number, because 113393281 - 2⁷ = 113393153 is a prime.

It is a super-2 number, since 2×113393281² = 25716072351889922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113393201) 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, 110551 + ... + 111571.

It is an arithmetic number, because the mean of its divisors is an integer number (7726320).

Almost surely, 2^113393281 is an apocalyptic number.

It is an amenable number.

113393281 is a deficient number, since it is larger than the sum of its proper divisors (10227839).

113393281 is a wasteful number, since it uses less digits than its factorization.

113393281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224.

The product of its digits is 3888, while the sum is 31.

The square root of 113393281 is about 10648.6281276040. The cubic root of 113393281 is about 484.0190339827.

The spelling of 113393281 in words is "one hundred thirteen million, three hundred ninety-three thousand, two hundred eighty-one".