328211501 has 2 divisors, whose sum is σ = 328211502. Its totient is φ = 328211500.

The previous prime is 328211447. The next prime is 328211573. The reversal of 328211501 is 105112823.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245674276 + 82537225 = 15674^2 + 9085^2 .

It is an emirp because it is prime and its reverse (105112823) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328211501 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328211581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164105750 + 164105751.

It is an arithmetic number, because the mean of its divisors is an integer number (164105751).

Almost surely, 2^328211501 is an apocalyptic number.

It is an amenable number.

328211501 is a deficient number, since it is larger than the sum of its proper divisors (1).

328211501 is an equidigital number, since it uses as much as digits as its factorization.

328211501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 328211501 is about 18116.6084298359. The cubic root of 328211501 is about 689.7916482177.

The spelling of 328211501 in words is "three hundred twenty-eight million, two hundred eleven thousand, five hundred one".