323212321 has 2 divisors, whose sum is σ = 323212322. Its totient is φ = 323212320.

The previous prime is 323212297. The next prime is 323212327. The reversal of 323212321 is 123212323.

323212321 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273439296 + 49773025 = 16536^2 + 7055^2 .

It is a cyclic number.

It is not a de Polignac number, because 323212321 - 2⁷ = 323212193 is a prime.

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

It is not a weakly prime, because it can be changed into another prime (323212327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161606160 + 161606161.

It is an arithmetic number, because the mean of its divisors is an integer number (161606161).

Almost surely, 2^323212321 is an apocalyptic number.

It is an amenable number.

323212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

323212321 is an equidigital number, since it uses as much as digits as its factorization.

323212321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 19.

The square root of 323212321 is about 17978.1067134446. The cubic root of 323212321 is about 686.2715090864.

Adding to 323212321 its reverse (123212323), we get a palindrome (446424644).

The spelling of 323212321 in words is "three hundred twenty-three million, two hundred twelve thousand, three hundred twenty-one".