323032321 has 6 divisors (see below), whose sum is σ = 327651266. Its totient is φ = 318477600.

The previous prime is 323032313. The next prime is 323032387. The reversal of 323032321 is 123230323.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 255200625 + 67831696 = 15975^2 + 8236^2 .

It is not a de Polignac number, because 323032321 - 2³ = 323032313 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323032921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27000 + ... + 37081.

Almost surely, 2^323032321 is an apocalyptic number.

It is an amenable number.

323032321 is a deficient number, since it is larger than the sum of its proper divisors (4618945).

323032321 is an frugal number, since it uses more digits than its factorization.

323032321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64223 (or 64152 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 323032321 is about 17973.0999273915. The cubic root of 323032321 is about 686.1440883971.

Adding to 323032321 its reverse (123230323), we get a palindrome (446262644).

The spelling of 323032321 in words is "three hundred twenty-three million, thirty-two thousand, three hundred twenty-one".