113257091 has 4 divisors (see below), whose sum is σ = 114808632. Its totient is φ = 111705552.

The previous prime is 113257051. The next prime is 113257121. The reversal of 113257091 is 190752311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113257091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113257031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775661 + ... + 775806.

It is an arithmetic number, because the mean of its divisors is an integer number (28702158).

Almost surely, 2^113257091 is an apocalyptic number.

113257091 is a deficient number, since it is larger than the sum of its proper divisors (1551541).

113257091 is an equidigital number, since it uses as much as digits as its factorization.

113257091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551540.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 113257091 is about 10642.2314859244. The cubic root of 113257091 is about 483.8251807562.

The spelling of 113257091 in words is "one hundred thirteen million, two hundred fifty-seven thousand, ninety-one".