328138201 has 2 divisors, whose sum is σ = 328138202. Its totient is φ = 328138200.

The previous prime is 328138183. The next prime is 328138207. The reversal of 328138201 is 102831823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283046976 + 45091225 = 16824^2 + 6715^2 .

It is an emirp because it is prime and its reverse (102831823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 328138201 - 2²¹ = 326041049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 328138201.

It is not a weakly prime, because it can be changed into another prime (328138207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164069100 + 164069101.

It is an arithmetic number, because the mean of its divisors is an integer number (164069101).

Almost surely, 2^328138201 is an apocalyptic number.

It is an amenable number.

328138201 is a deficient number, since it is larger than the sum of its proper divisors (1).

328138201 is an equidigital number, since it uses as much as digits as its factorization.

328138201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 328138201 is about 18114.5853112899. The cubic root of 328138201 is about 689.7402936368.

It can be divided in two parts, 32813 and 8201, that added together give a palindrome (41014).

The spelling of 328138201 in words is "three hundred twenty-eight million, one hundred thirty-eight thousand, two hundred one".