322402321 has 2 divisors, whose sum is σ = 322402322. Its totient is φ = 322402320.

The previous prime is 322402319. The next prime is 322402357. The reversal of 322402321 is 123204223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165251025 + 157151296 = 12855^2 + 12536^2 .

It is a cyclic number.

It is not a de Polignac number, because 322402321 - 2¹ = 322402319 is a prime.

Together with 322402319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (322402391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161201160 + 161201161.

It is an arithmetic number, because the mean of its divisors is an integer number (161201161).

Almost surely, 2^322402321 is an apocalyptic number.

It is an amenable number.

322402321 is a deficient number, since it is larger than the sum of its proper divisors (1).

322402321 is an equidigital number, since it uses as much as digits as its factorization.

322402321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 322402321 is about 17955.5651818594. The cubic root of 322402321 is about 685.6977428693.

Adding to 322402321 its reverse (123204223), we get a palindrome (445606544).

The spelling of 322402321 in words is "three hundred twenty-two million, four hundred two thousand, three hundred twenty-one".