323432321 has 4 divisors (see below), whose sum is σ = 326399700. Its totient is φ = 320464944.

The previous prime is 323432311. The next prime is 323432353. The reversal of 323432321 is 123234323.

323432321 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

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 157151296 + 166281025 = 12536^2 + 12895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323432321 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (323432311) 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, 1483526 + ... + 1483743.

It is an arithmetic number, because the mean of its divisors is an integer number (81599925).

Almost surely, 2^323432321 is an apocalyptic number.

It is an amenable number.

323432321 is a deficient number, since it is larger than the sum of its proper divisors (2967379).

323432321 is a wasteful number, since it uses less digits than its factorization.

323432321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967378.

The product of its digits is 2592, while the sum is 23.

The square root of 323432321 is about 17984.2242256929. The cubic root of 323432321 is about 686.4271812555.

Adding to 323432321 its reverse (123234323), we get a palindrome (446666644).

The spelling of 323432321 in words is "three hundred twenty-three million, four hundred thirty-two thousand, three hundred twenty-one".