328511 has 2 divisors, whose sum is σ = 328512. Its totient is φ = 328510.

The previous prime is 328481. The next prime is 328513. The reversal of 328511 is 115823.

It is a strong prime.

It is an emirp because it is prime and its reverse (115823) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328511 is a prime.

Together with 328513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164255 + 164256.

It is an arithmetic number, because the mean of its divisors is an integer number (164256).

328511 is a Friedman number, since it can be written as (8^(1+1)+5)^3+2, using all its digits and the basic arithmetic operations.

2³²⁸⁵¹¹ is an apocalyptic number.

328511 is a deficient number, since it is larger than the sum of its proper divisors (1).

328511 is an equidigital number, since it uses as much as digits as its factorization.

328511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 20.

The square root of 328511 is about 573.1587912612. The cubic root of 328511 is about 69.0001400263. Note that the first 3 decimals are identical.

The spelling of 328511 in words is "three hundred twenty-eight thousand, five hundred eleven".