329321 has 2 divisors, whose sum is σ = 329322. Its totient is φ = 329320.

The previous prime is 329317. The next prime is 329333. The reversal of 329321 is 123923.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287296 + 42025 = 536^2 + 205^2 .

It is an emirp because it is prime and its reverse (123923) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 329321 - 2² = 329317 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p₂₈₃₅₂ and since 329321 and 28352 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 329293 and 329302.

It is not a weakly prime, because it can be changed into another prime (319321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164660 + 164661.

It is an arithmetic number, because the mean of its divisors is an integer number (164661).

2³²⁹³²¹ is an apocalyptic number.

It is an amenable number.

329321 is a deficient number, since it is larger than the sum of its proper divisors (1).

329321 is an equidigital number, since it uses as much as digits as its factorization.

329321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 20.

The square root of 329321 is about 573.8649666951. The cubic root of 329321 is about 69.0568040251.

The spelling of 329321 in words is "three hundred twenty-nine thousand, three hundred twenty-one".