113919391 has 8 divisors (see below), whose sum is σ = 120822624. Its totient is φ = 107178720.

The previous prime is 113919373. The next prime is 113919413. The reversal of 113919391 is 193919311.

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 113919391 - 2⁹ = 113918879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113919391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113919301) 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, 39196 + ... + 42001.

It is an arithmetic number, because the mean of its divisors is an integer number (15102828).

Almost surely, 2^113919391 is an apocalyptic number.

113919391 is a deficient number, since it is larger than the sum of its proper divisors (6903233).

113919391 is an equidigital number, since it uses as much as digits as its factorization.

113919391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81281.

The product of its digits is 6561, while the sum is 37.

The square root of 113919391 is about 10673.3027222130. The cubic root of 113919391 is about 484.7664458087.

The spelling of 113919391 in words is "one hundred thirteen million, nine hundred nineteen thousand, three hundred ninety-one".