113561163 has 16 divisors (see below), whose sum is σ = 170611200. Its totient is φ = 74639880.

The previous prime is 113561137. The next prime is 113561183. The reversal of 113561163 is 361165311.

113561163 is a `hidden beast` number, since 11 + 35 + 611 + 6 + 3 = 666.

It is not a de Polignac number, because 113561163 - 2⁹ = 113560651 is a prime.

It is a super-2 number, since 2×113561163² = 25792275483825138, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (113561183) 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, 27703 + ... + 31536.

It is an arithmetic number, because the mean of its divisors is an integer number (10663200).

Almost surely, 2^113561163 is an apocalyptic number.

113561163 is a deficient number, since it is larger than the sum of its proper divisors (57050037).

113561163 is an equidigital number, since it uses as much as digits as its factorization.

113561163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59319 (or 59313 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 113561163 is about 10656.5080115392. The cubic root of 113561163 is about 484.2577842098.

The spelling of 113561163 in words is "one hundred thirteen million, five hundred sixty-one thousand, one hundred sixty-three".