321352313 has 2 divisors, whose sum is σ = 321352314. Its totient is φ = 321352312.

The previous prime is 321352271. The next prime is 321352321. The reversal of 321352313 is 313253123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225840784 + 95511529 = 15028^2 + 9773^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321352313 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (321352813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160676156 + 160676157.

It is an arithmetic number, because the mean of its divisors is an integer number (160676157).

Almost surely, 2^321352313 is an apocalyptic number.

It is an amenable number.

321352313 is a deficient number, since it is larger than the sum of its proper divisors (1).

321352313 is an equidigital number, since it uses as much as digits as its factorization.

321352313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 23.

The square root of 321352313 is about 17926.3022678967. The cubic root of 321352313 is about 684.9525340509.

The spelling of 321352313 in words is "three hundred twenty-one million, three hundred fifty-two thousand, three hundred thirteen".