323421321 has 4 divisors (see below), whose sum is σ = 431228432. Its totient is φ = 215614212.

The previous prime is 323421271. The next prime is 323421347. The reversal of 323421321 is 123124323.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 323421321 - 2⁶ = 323421257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (323421391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53903551 + ... + 53903556.

It is an arithmetic number, because the mean of its divisors is an integer number (107807108).

Almost surely, 2^323421321 is an apocalyptic number.

It is an amenable number.

323421321 is a deficient number, since it is larger than the sum of its proper divisors (107807111).

323421321 is a wasteful number, since it uses less digits than its factorization.

323421321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107807110.

The product of its digits is 864, while the sum is 21.

The square root of 323421321 is about 17983.9183995035. The cubic root of 323421321 is about 686.4193993239.

Adding to 323421321 its reverse (123124323), we get a palindrome (446545644).

The spelling of 323421321 in words is "three hundred twenty-three million, four hundred twenty-one thousand, three hundred twenty-one".