328331 has 2 divisors, whose sum is σ = 328332. Its totient is φ = 328330.

The previous prime is 328327. The next prime is 328333. The reversal of 328331 is 133823.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 328331 - 2² = 328327 is a prime.

It is a super-2 number, since 2×328331² = 215602491122, which contains 22 as substring.

Together with 328333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (328333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164165 + 164166.

It is an arithmetic number, because the mean of its divisors is an integer number (164166).

2³²⁸³³¹ is an apocalyptic number.

328331 is a deficient number, since it is larger than the sum of its proper divisors (1).

328331 is an equidigital number, since it uses as much as digits as its factorization.

328331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 20.

The square root of 328331 is about 573.0017451980. The cubic root of 328331 is about 68.9875353806.

The spelling of 328331 in words is "three hundred twenty-eight thousand, three hundred thirty-one".