328128023017 has 4 divisors (see below), whose sum is σ = 328129227076. Its totient is φ = 328126818960.

The previous prime is 328128022997. The next prime is 328128023077. The reversal of 328128023017 is 710320821823.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 710320821823 = 3253 ⋅218358691.

It can be written as a sum of positive squares in 2 ways, for example, as 34606788841 + 293521234176 = 186029^2 + 541776^2 .

It is a cyclic number.

It is not a de Polignac number, because 328128023017 - 2²⁷ = 327993805289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328128023077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23167 + ... + 810427.

It is an arithmetic number, because the mean of its divisors is an integer number (82032306769).

Almost surely, 2^328128023017 is an apocalyptic number.

It is an amenable number.

328128023017 is a deficient number, since it is larger than the sum of its proper divisors (1204059).

328128023017 is an equidigital number, since it uses as much as digits as its factorization.

328128023017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204058.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 328128023017 in words is "three hundred twenty-eight billion, one hundred twenty-eight million, twenty-three thousand, seventeen".