113161391 has 8 divisors (see below), whose sum is σ = 129408000. Its totient is φ = 96934968.

The previous prime is 113161387. The next prime is 113161421. The reversal of 113161391 is 193161311.

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 113161391 - 2² = 113161387 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 113161391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113161591) 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, 9950 + ... + 18036.

It is an arithmetic number, because the mean of its divisors is an integer number (16176000).

Almost surely, 2^113161391 is an apocalyptic number.

113161391 is a deficient number, since it is larger than the sum of its proper divisors (16246609).

113161391 is an equidigital number, since it uses as much as digits as its factorization.

113161391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10093.

The product of its digits is 486, while the sum is 26.

The square root of 113161391 is about 10637.7342982423. The cubic root of 113161391 is about 483.6888681216.

The spelling of 113161391 in words is "one hundred thirteen million, one hundred sixty-one thousand, three hundred ninety-one".