328131 has 10 divisors (see below), whose sum is σ = 490292. Its totient is φ = 218700.

The previous prime is 328129. The next prime is 328171. The reversal of 328131 is 131823.

It is not a de Polignac number, because 328131 - 2¹ = 328129 is a prime.

It is a super-2 number, since 2×328131² = 215339906322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1945 + ... + 2106.

2³²⁸¹³¹ is an apocalyptic number.

328131 is a deficient number, since it is larger than the sum of its proper divisors (162161).

328131 is an equidigital number, since it uses as much as digits as its factorization.

328131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063 (or 4054 counting only the distinct ones).

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

The square root of 328131 is about 572.8271990749. The cubic root of 328131 is about 68.9735248145.

Adding to 328131 its reverse (131823), we get a palindrome (459954).

The spelling of 328131 in words is "three hundred twenty-eight thousand, one hundred thirty-one".