328311 has 6 divisors (see below), whose sum is σ = 474240. Its totient is φ = 218868.

The previous prime is 328303. The next prime is 328327. The reversal of 328311 is 113823.

It is not a de Polignac number, because 328311 - 2³ = 328303 is a prime.

It is a super-2 number, since 2×328311² = 215576225442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18231 + ... + 18248.

It is an arithmetic number, because the mean of its divisors is an integer number (79040).

2³²⁸³¹¹ is an apocalyptic number.

328311 is a deficient number, since it is larger than the sum of its proper divisors (145929).

328311 is a wasteful number, since it uses less digits than its factorization.

328311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36485 (or 36482 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 328311 is about 572.9842929784. The cubic root of 328311 is about 68.9861345801.

Adding to 328311 its sum of digits (18), we get a square (328329 = 573²).

Adding to 328311 its product of digits (144), we get a triangular number (328455 = T₈₁₀).

The spelling of 328311 in words is "three hundred twenty-eight thousand, three hundred eleven".