91323351 has 12 divisors (see below), whose sum is σ = 150756112. Its totient is φ = 52184736.

The previous prime is 91323347. The next prime is 91323373. The reversal of 91323351 is 15332319.

It is a happy number.

It is not a de Polignac number, because 91323351 - 2² = 91323347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91323301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 724726 + ... + 724851.

Almost surely, 2^91323351 is an apocalyptic number.

91323351 is a deficient number, since it is larger than the sum of its proper divisors (59432761).

91323351 is a wasteful number, since it uses less digits than its factorization.

91323351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449590 (or 1449587 counting only the distinct ones).

The product of its digits is 2430, while the sum is 27.

The square root of 91323351 is about 9556.3251828305. The cubic root of 91323351 is about 450.3262670905.

The spelling of 91323351 in words is "ninety-one million, three hundred twenty-three thousand, three hundred fifty-one".