327212321 has 2 divisors, whose sum is σ = 327212322. Its totient is φ = 327212320.

The previous prime is 327212299. The next prime is 327212339. The reversal of 327212321 is 123212723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 327211921 + 400 = 18089^2 + 20^2 .

It is an emirp because it is prime and its reverse (123212723) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 327212321 - 2²⁶ = 260103457 is a prime.

It is a Chen 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 (327212341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163606160 + 163606161.

It is an arithmetic number, because the mean of its divisors is an integer number (163606161).

Almost surely, 2^327212321 is an apocalyptic number.

It is an amenable number.

327212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

327212321 is an equidigital number, since it uses as much as digits as its factorization.

327212321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 23.

The square root of 327212321 is about 18089.0110564398. The cubic root of 327212321 is about 689.0909551079.

The spelling of 327212321 in words is "three hundred twenty-seven million, two hundred twelve thousand, three hundred twenty-one".