320331307 has 2 divisors, whose sum is σ = 320331308. Its totient is φ = 320331306.

The previous prime is 320331301. The next prime is 320331337. The reversal of 320331307 is 703133023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320331307 - 2³ = 320331299 is a prime.

It is a super-2 number, since 2×320331307² = 205224292488656498, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320331301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160165653 + 160165654.

It is an arithmetic number, because the mean of its divisors is an integer number (160165654).

Almost surely, 2^320331307 is an apocalyptic number.

320331307 is a deficient number, since it is larger than the sum of its proper divisors (1).

320331307 is an equidigital number, since it uses as much as digits as its factorization.

320331307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 22.

The square root of 320331307 is about 17897.8017365262. The cubic root of 320331307 is about 684.2263501700.

The spelling of 320331307 in words is "three hundred twenty million, three hundred thirty-one thousand, three hundred seven".