113091 has 16 divisors (see below), whose sum is σ = 172800. Its totient is φ = 65120.

The previous prime is 113089. The next prime is 113093. The reversal of 113091 is 190311.

It is an interprime number because it is at equal distance from previous prime (113089) and next prime (113093).

It is not a de Polignac number, because 113091 - 2¹ = 113089 is a prime.

It is an Ulam number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 113091.

It is not an unprimeable number, because it can be changed into a prime (113093) 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, 685 + ... + 833.

It is an arithmetic number, because the mean of its divisors is an integer number (10800).

2¹¹³⁰⁹¹ is an apocalyptic number.

113091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113091 is a deficient number, since it is larger than the sum of its proper divisors (59709).

113091 is a wasteful number, since it uses less digits than its factorization.

113091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186.

The product of its (nonzero) digits is 27, while the sum is 15.

The square root of 113091 is about 336.2900533765. The cubic root of 113091 is about 48.3588555919.

It can be divided in two parts, 1130 and 91, that added together give a palindrome (1221).

The spelling of 113091 in words is "one hundred thirteen thousand, ninety-one".