99232321 has 4 divisors (see below), whose sum is σ = 99864532. Its totient is φ = 98600112.

The previous prime is 99232313. The next prime is 99232337. The reversal of 99232321 is 12323299.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18879025 + 80353296 = 4345^2 + 8964^2 .

It is a cyclic number.

It is not a de Polignac number, because 99232321 - 2³ = 99232313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99232351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315870 + ... + 316183.

It is an arithmetic number, because the mean of its divisors is an integer number (24966133).

Almost surely, 2^99232321 is an apocalyptic number.

It is an amenable number.

99232321 is a deficient number, since it is larger than the sum of its proper divisors (632211).

99232321 is a wasteful number, since it uses less digits than its factorization.

99232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632210.

The product of its digits is 5832, while the sum is 31.

The square root of 99232321 is about 9961.5420994944. The cubic root of 99232321 is about 462.9680808713.

The spelling of 99232321 in words is "ninety-nine million, two hundred thirty-two thousand, three hundred twenty-one".