328121 has 2 divisors, whose sum is σ = 328122. Its totient is φ = 328120.

The previous prime is 328109. The next prime is 328127. The reversal of 328121 is 121823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212521 + 115600 = 461^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 328121 - 2¹⁴ = 311737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 328121.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328121.

It is not a weakly prime, because it can be changed into another prime (328127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164060 + 164061.

It is an arithmetic number, because the mean of its divisors is an integer number (164061).

2³²⁸¹²¹ is an apocalyptic number.

It is an amenable number.

328121 is a deficient number, since it is larger than the sum of its proper divisors (1).

328121 is an equidigital number, since it uses as much as digits as its factorization.

328121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 17.

The square root of 328121 is about 572.8184703726. The cubic root of 328121 is about 68.9728241367.

Adding to 328121 its reverse (121823), we get a palindrome (449944).

The spelling of 328121 in words is "three hundred twenty-eight thousand, one hundred twenty-one".