113881005 has 64 divisors (see below), whose sum is σ = 237703680. Its totient is φ = 50637312.

The previous prime is 113880997. The next prime is 113881093. The reversal of 113881005 is 500188311.

It is not a de Polignac number, because 113881005 - 2³ = 113880997 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 113881005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33337 + ... + 36593.

It is an arithmetic number, because the mean of its divisors is an integer number (3714120).

Almost surely, 2^113881005 is an apocalyptic number.

113881005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113881005 is an abundant number, since it is smaller than the sum of its proper divisors (123822675).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113881005 is a wasteful number, since it uses less digits than its factorization.

113881005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3315 (or 3309 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 113881005 is about 10671.5043456862. The cubic root of 113881005 is about 484.7119911190.

The spelling of 113881005 in words is "one hundred thirteen million, eight hundred eighty-one thousand, five".