113881563 has 12 divisors (see below), whose sum is σ = 165333168. Its totient is φ = 75534480.

The previous prime is 113881549. The next prime is 113881609. The reversal of 113881563 is 365188311.

113881563 is a `hidden beast` number, since 1 + 13 + 8 + 81 + 563 = 666.

It is not a de Polignac number, because 113881563 - 2²⁴ = 97104347 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (113882563) 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, 30343 + ... + 33888.

It is an arithmetic number, because the mean of its divisors is an integer number (13777764).

Almost surely, 2^113881563 is an apocalyptic number.

113881563 is a deficient number, since it is larger than the sum of its proper divisors (51451605).

113881563 is a wasteful number, since it uses less digits than its factorization.

113881563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64434 (or 64431 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 113881563 is about 10671.5304900469. The cubic root of 113881563 is about 484.7127827900.

The spelling of 113881563 in words is "one hundred thirteen million, eight hundred eighty-one thousand, five hundred sixty-three".