320334331 has 2 divisors, whose sum is σ = 320334332. Its totient is φ = 320334330.

The previous prime is 320334277. The next prime is 320334337. The reversal of 320334331 is 133433023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320334331 - 2²³ = 311945723 is a prime.

It is a super-2 number, since 2×320334331² = 205228167234435122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320334337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160167165 + 160167166.

It is an arithmetic number, because the mean of its divisors is an integer number (160167166).

Almost surely, 2^320334331 is an apocalyptic number.

320334331 is a deficient number, since it is larger than the sum of its proper divisors (1).

320334331 is an equidigital number, since it uses as much as digits as its factorization.

320334331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 22.

The square root of 320334331 is about 17897.8862159753. The cubic root of 320334331 is about 684.2285032471.

Adding to 320334331 its reverse (133433023), we get a palindrome (453767354).

The spelling of 320334331 in words is "three hundred twenty million, three hundred thirty-four thousand, three hundred thirty-one".