91123357 has 8 divisors (see below), whose sum is σ = 98737184. Its totient is φ = 83595888.

The previous prime is 91123343. The next prime is 91123363. The reversal of 91123357 is 75332119.

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

It is a cyclic number.

It is not a de Polignac number, because 91123357 - 2¹⁵ = 91090589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91123337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19383 + ... + 23620.

It is an arithmetic number, because the mean of its divisors is an integer number (12342148).

Almost surely, 2^91123357 is an apocalyptic number.

It is an amenable number.

91123357 is a deficient number, since it is larger than the sum of its proper divisors (7613827).

91123357 is a wasteful number, since it uses less digits than its factorization.

91123357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43179.

The product of its digits is 5670, while the sum is 31.

The square root of 91123357 is about 9545.8554881163. The cubic root of 91123357 is about 449.9972954570.

The spelling of 91123357 in words is "ninety-one million, one hundred twenty-three thousand, three hundred fifty-seven".