328217 has 4 divisors (see below), whose sum is σ = 333840. Its totient is φ = 322596.

The previous prime is 328213. The next prime is 328243. The reversal of 328217 is 712823.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 712823 = 19 ⋅37517.

It is a cyclic number.

It is not a de Polignac number, because 328217 - 2² = 328213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328192 and 328201.

It is not an unprimeable number, because it can be changed into a prime (328213) 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, 2723 + ... + 2840.

It is an arithmetic number, because the mean of its divisors is an integer number (83460).

2³²⁸²¹⁷ is an apocalyptic number.

It is an amenable number.

328217 is a deficient number, since it is larger than the sum of its proper divisors (5623).

328217 is an equidigital number, since it uses as much as digits as its factorization.

328217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5622.

The product of its digits is 672, while the sum is 23.

The square root of 328217 is about 572.9022604249. The cubic root of 328217 is about 68.9795500554.

It can be divided in two parts, 328 and 217, that added together give a palindrome (545).

The spelling of 328217 in words is "three hundred twenty-eight thousand, two hundred seventeen".