91116313 has 4 divisors (see below), whose sum is σ = 91217680. Its totient is φ = 91014948.

The previous prime is 91116299. The next prime is 91116323. The reversal of 91116313 is 31361119.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31361119 = 31 ⋅1011649.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91116313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91116323) 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, 49323 + ... + 51136.

It is an arithmetic number, because the mean of its divisors is an integer number (22804420).

Almost surely, 2^91116313 is an apocalyptic number.

It is an amenable number.

91116313 is a deficient number, since it is larger than the sum of its proper divisors (101367).

91116313 is a wasteful number, since it uses less digits than its factorization.

91116313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101366.

The product of its digits is 486, while the sum is 25.

The square root of 91116313 is about 9545.4865250547. The cubic root of 91116313 is about 449.9856999571.

The spelling of 91116313 in words is "ninety-one million, one hundred sixteen thousand, three hundred thirteen".