328130931 has 16 divisors (see below), whose sum is σ = 461335040. Its totient is φ = 206880480.

The previous prime is 328130927. The next prime is 328130963. The reversal of 328130931 is 139031823.

It is not a de Polignac number, because 328130931 - 2² = 328130927 is a prime.

It is a super-2 number, since 2×328130931² = 215339815757853522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328130981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30246 + ... + 39636.

It is an arithmetic number, because the mean of its divisors is an integer number (28833440).

Almost surely, 2^328130931 is an apocalyptic number.

328130931 is a deficient number, since it is larger than the sum of its proper divisors (133204109).

328130931 is a wasteful number, since it uses less digits than its factorization.

328130931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10026.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 328130931 is about 18114.3846431503. The cubic root of 328130931 is about 689.7351997983.

The spelling of 328130931 in words is "three hundred twenty-eight million, one hundred thirty thousand, nine hundred thirty-one".