113991263 has 8 divisors (see below), whose sum is σ = 115640832. Its totient is φ = 112353696.

The previous prime is 113991253. The next prime is 113991271. The reversal of 113991263 is 362199311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113991263 - 2²⁶ = 46882399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113991253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17081 + ... + 22797.

It is an arithmetic number, because the mean of its divisors is an integer number (14455104).

Almost surely, 2^113991263 is an apocalyptic number.

113991263 is a deficient number, since it is larger than the sum of its proper divisors (1649569).

113991263 is a wasteful number, since it uses less digits than its factorization.

113991263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6001.

The product of its digits is 8748, while the sum is 35.

The square root of 113991263 is about 10676.6690966799. The cubic root of 113991263 is about 484.8683711237.

The spelling of 113991263 in words is "one hundred thirteen million, nine hundred ninety-one thousand, two hundred sixty-three".