91313611 has 4 divisors (see below), whose sum is σ = 95283792. Its totient is φ = 87343432.

The previous prime is 91313587. The next prime is 91313617. The reversal of 91313611 is 11631319.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 91313611 - 2⁷ = 91313483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91313617) 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, 1985056 + ... + 1985101.

It is an arithmetic number, because the mean of its divisors is an integer number (23820948).

Almost surely, 2^91313611 is an apocalyptic number.

91313611 is a deficient number, since it is larger than the sum of its proper divisors (3970181).

91313611 is a wasteful number, since it uses less digits than its factorization.

91313611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3970180.

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

The square root of 91313611 is about 9555.8155591242. The cubic root of 91313611 is about 450.3102568232.

The spelling of 91313611 in words is "ninety-one million, three hundred thirteen thousand, six hundred eleven".