328181 has 8 divisors (see below), whose sum is σ = 378624. Its totient is φ = 278640.

The previous prime is 328177. The next prime is 328213. The reversal of 328181 is 181823.

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

It is a cyclic number.

It is not a de Polignac number, because 328181 - 2² = 328177 is a prime.

It is a super-2 number, since 2×328181² = 215405537522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328181.

It is not an unprimeable number, because it can be changed into a prime (328121) 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, 1076 + ... + 1346.

It is an arithmetic number, because the mean of its divisors is an integer number (47328).

2³²⁸¹⁸¹ is an apocalyptic number.

It is an amenable number.

328181 is a deficient number, since it is larger than the sum of its proper divisors (50443).

328181 is a wasteful number, since it uses less digits than its factorization.

328181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451.

The product of its digits is 384, while the sum is 23.

The square root of 328181 is about 572.8708405915. The cubic root of 328181 is about 68.9770279896.

The spelling of 328181 in words is "three hundred twenty-eight thousand, one hundred eighty-one".