91318033 has 16 divisors (see below), whose sum is σ = 100362240. Its totient is φ = 82713600.

The previous prime is 91318001. The next prime is 91318043. The reversal of 91318033 is 33081319.

It is a cyclic number.

It is not a de Polignac number, because 91318033 - 2⁵ = 91318001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91317992 and 91318010.

It is not an unprimeable number, because it can be changed into a prime (91318043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126648 + ... + 127366.

It is an arithmetic number, because the mean of its divisors is an integer number (6272640).

Almost surely, 2^91318033 is an apocalyptic number.

It is an amenable number.

91318033 is a deficient number, since it is larger than the sum of its proper divisors (9044207).

91318033 is a wasteful number, since it uses less digits than its factorization.

91318033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 91318033 is about 9556.0469337483. The cubic root of 91318033 is about 450.3175256914.

The spelling of 91318033 in words is "ninety-one million, three hundred eighteen thousand, thirty-three".