328121717 has 8 divisors (see below), whose sum is σ = 409086912. Its totient is φ = 255679200.

The previous prime is 328121707. The next prime is 328121723. The reversal of 328121717 is 717121823.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 328121717 - 2⁶ = 328121653 is a prime.

It is a super-2 number, since 2×328121717² = 215327722334056178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328121707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2130584 + ... + 2130737.

It is an arithmetic number, because the mean of its divisors is an integer number (51135864).

Almost surely, 2^328121717 is an apocalyptic number.

It is an amenable number.

328121717 is a deficient number, since it is larger than the sum of its proper divisors (80965195).

328121717 is a wasteful number, since it uses less digits than its factorization.

328121717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4261339.

The product of its digits is 4704, while the sum is 32.

The square root of 328121717 is about 18114.1303131009. The cubic root of 328121717 is about 689.7287437579.

The spelling of 328121717 in words is "three hundred twenty-eight million, one hundred twenty-one thousand, seven hundred seventeen".