91345233 has 16 divisors (see below), whose sum is σ = 147381120. Its totient is φ = 49126656.

The previous prime is 91345231. The next prime is 91345237. The reversal of 91345233 is 33254319.

It is not a de Polignac number, because 91345233 - 2¹ = 91345231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91345233.

It is not an unprimeable number, because it can be changed into a prime (91345231) 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, 127578 + ... + 128291.

It is an arithmetic number, because the mean of its divisors is an integer number (9211320).

Almost surely, 2^91345233 is an apocalyptic number.

It is an amenable number.

91345233 is a deficient number, since it is larger than the sum of its proper divisors (56035887).

91345233 is a wasteful number, since it uses less digits than its factorization.

91345233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255896.

The product of its digits is 9720, while the sum is 30.

The square root of 91345233 is about 9557.4700104159. The cubic root of 91345233 is about 450.3622317966.

The spelling of 91345233 in words is "ninety-one million, three hundred forty-five thousand, two hundred thirty-three".