113312891 has 2 divisors, whose sum is σ = 113312892. Its totient is φ = 113312890.

The previous prime is 113312867. The next prime is 113312909. The reversal of 113312891 is 198213311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113312891 - 2¹⁰ = 113311867 is a prime.

It is a super-2 number, since 2×113312891² = 25679622533555762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (113312821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56656445 + 56656446.

It is an arithmetic number, because the mean of its divisors is an integer number (56656446).

Almost surely, 2^113312891 is an apocalyptic number.

113312891 is a deficient number, since it is larger than the sum of its proper divisors (1).

113312891 is an equidigital number, since it uses as much as digits as its factorization.

113312891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 29.

The square root of 113312891 is about 10644.8527937215. The cubic root of 113312891 is about 483.9046254141.

The spelling of 113312891 in words is "one hundred thirteen million, three hundred twelve thousand, eight hundred ninety-one".