113881 has 4 divisors (see below), whose sum is σ = 116352. Its totient is φ = 111412.

The previous prime is 113843. The next prime is 113891. The reversal of 113881 is 188311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113881 - 2¹¹ = 111833 is a prime.

It is a super-2 number, since 2×113881² = 25937764322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165 + ... + 1258.

It is an arithmetic number, because the mean of its divisors is an integer number (29088).

2¹¹³⁸⁸¹ is an apocalyptic number.

It is an amenable number.

113881 is a deficient number, since it is larger than the sum of its proper divisors (2471).

113881 is an equidigital number, since it uses as much as digits as its factorization.

113881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470.

The product of its digits is 192, while the sum is 22.

The square root of 113881 is about 337.4625905193. The cubic root of 113881 is about 48.4711984025.

The spelling of 113881 in words is "one hundred thirteen thousand, eight hundred eighty-one".