328129 has 2 divisors, whose sum is σ = 328130. Its totient is φ = 328128.

The previous prime is 328127. The next prime is 328171. The reversal of 328129 is 921823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207025 + 121104 = 455^2 + 348^2 .

It is a cyclic number.

It is not a de Polignac number, because 328129 - 2¹ = 328127 is a prime.

Together with 328127, it forms a pair of twin primes.

328129 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (328121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164064 + 164065.

It is an arithmetic number, because the mean of its divisors is an integer number (164065).

2³²⁸¹²⁹ is an apocalyptic number.

It is an amenable number.

328129 is a deficient number, since it is larger than the sum of its proper divisors (1).

328129 is an equidigital number, since it uses as much as digits as its factorization.

328129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 328129 is about 572.8254533451. The cubic root of 328129 is about 68.9733846801.

The spelling of 328129 in words is "three hundred twenty-eight thousand, one hundred twenty-nine".