321004223 has 2 divisors, whose sum is σ = 321004224. Its totient is φ = 321004222.

The previous prime is 321004207. The next prime is 321004249. The reversal of 321004223 is 322400123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321004223 - 2⁴ = 321004207 is a prime.

It is a super-2 number, since 2×321004223² = 206087422367667458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321004273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160502111 + 160502112.

It is an arithmetic number, because the mean of its divisors is an integer number (160502112).

Almost surely, 2^321004223 is an apocalyptic number.

321004223 is a deficient number, since it is larger than the sum of its proper divisors (1).

321004223 is an equidigital number, since it uses as much as digits as its factorization.

321004223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 321004223 is about 17916.5907192189. The cubic root of 321004223 is about 684.7051303371.

Adding to 321004223 its reverse (322400123), we get a palindrome (643404346).

The spelling of 321004223 in words is "three hundred twenty-one million, four thousand, two hundred twenty-three".