328109 has 2 divisors, whose sum is σ = 328110. Its totient is φ = 328108.

The previous prime is 328103. The next prime is 328121. The reversal of 328109 is 901823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299209 + 28900 = 547^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 328109 - 2⁴ = 328093 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328109.

It is not a weakly prime, because it can be changed into another prime (328103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164054 + 164055.

It is an arithmetic number, because the mean of its divisors is an integer number (164055).

2³²⁸¹⁰⁹ is an apocalyptic number.

It is an amenable number.

328109 is a deficient number, since it is larger than the sum of its proper divisors (1).

328109 is an equidigital number, since it uses as much as digits as its factorization.

328109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 328109 is about 572.8079957542. The cubic root of 328109 is about 68.9719833047.

The spelling of 328109 in words is "three hundred twenty-eight thousand, one hundred nine".