324402321 has 16 divisors (see below), whose sum is σ = 450455040. Its totient is φ = 207432960.

The previous prime is 324402317. The next prime is 324402329. The reversal of 324402321 is 123204423.

It is not a de Polignac number, because 324402321 - 2² = 324402317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (324402329) 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, 4926 + ... + 25943.

It is an arithmetic number, because the mean of its divisors is an integer number (28153440).

Almost surely, 2^324402321 is an apocalyptic number.

324402321 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

324402321 is a deficient number, since it is larger than the sum of its proper divisors (126052719).

324402321 is a wasteful number, since it uses less digits than its factorization.

324402321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31016.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 324402321 is about 18011.1721162172. The cubic root of 324402321 is about 687.1127134868.

Adding to 324402321 its reverse (123204423), we get a palindrome (447606744).

The spelling of 324402321 in words is "three hundred twenty-four million, four hundred two thousand, three hundred twenty-one".