91236313 has 8 divisors (see below), whose sum is σ = 105193728. Its totient is φ = 77509824.

The previous prime is 91236289. The next prime is 91236323. The reversal of 91236313 is 31363219.

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

It is not a de Polignac number, because 91236313 - 2⁵ = 91236281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91236323) 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, 56881 + ... + 58462.

It is an arithmetic number, because the mean of its divisors is an integer number (13149216).

Almost surely, 2^91236313 is an apocalyptic number.

It is an amenable number.

91236313 is a deficient number, since it is larger than the sum of its proper divisors (13957415).

91236313 is a wasteful number, since it uses less digits than its factorization.

91236313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115463.

The product of its digits is 2916, while the sum is 28.

The square root of 91236313 is about 9551.7701500821. The cubic root of 91236313 is about 450.1831567181.

The spelling of 91236313 in words is "ninety-one million, two hundred thirty-six thousand, three hundred thirteen".