328530401 has 2 divisors, whose sum is σ = 328530402. Its totient is φ = 328530400.

The previous prime is 328530379. The next prime is 328530403. The reversal of 328530401 is 104035823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324036001 + 4494400 = 18001^2 + 2120^2 .

It is a cyclic number.

It is not a de Polignac number, because 328530401 - 2⁶ = 328530337 is a prime.

It is a super-3 number, since 3×328530401³ (a number of 27 digits) contains 333 as substring.

Together with 328530403, 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 (328530403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164265200 + 164265201.

It is an arithmetic number, because the mean of its divisors is an integer number (164265201).

Almost surely, 2^328530401 is an apocalyptic number.

It is an amenable number.

328530401 is a deficient number, since it is larger than the sum of its proper divisors (1).

328530401 is an equidigital number, since it uses as much as digits as its factorization.

328530401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 328530401 is about 18125.4076092098. The cubic root of 328530401 is about 690.0149832215.

The spelling of 328530401 in words is "three hundred twenty-eight million, five hundred thirty thousand, four hundred one".