99308321 has 16 divisors (see below), whose sum is σ = 116736000. Its totient is φ = 82717200.

The previous prime is 99308317. The next prime is 99308323. The reversal of 99308321 is 12380399.

It is a cyclic number.

It is not a de Polignac number, because 99308321 - 2² = 99308317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99308323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48680 + ... + 50678.

It is an arithmetic number, because the mean of its divisors is an integer number (7296000).

Almost surely, 2^99308321 is an apocalyptic number.

It is an amenable number.

99308321 is a deficient number, since it is larger than the sum of its proper divisors (17427679).

99308321 is a wasteful number, since it uses less digits than its factorization.

99308321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 99308321 is about 9965.3560398011. The cubic root of 99308321 is about 463.0862432972.

The spelling of 99308321 in words is "ninety-nine million, three hundred eight thousand, three hundred twenty-one".