328381831 has 2 divisors, whose sum is σ = 328381832. Its totient is φ = 328381830.

The previous prime is 328381789. The next prime is 328381847. The reversal of 328381831 is 138183823.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 328381831 - 2²⁵ = 294827399 is a prime.

It is a super-2 number, since 2×328381831² = 215669253861825122, which contains 22 as substring.

It is equal to p_17702947 and since 328381831 and 17702947 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328381331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164190915 + 164190916.

It is an arithmetic number, because the mean of its divisors is an integer number (164190916).

Almost surely, 2^328381831 is an apocalyptic number.

328381831 is a deficient number, since it is larger than the sum of its proper divisors (1).

328381831 is an equidigital number, since it uses as much as digits as its factorization.

328381831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 37.

The square root of 328381831 is about 18121.3087551645. The cubic root of 328381831 is about 689.9109532920.

The spelling of 328381831 in words is "three hundred twenty-eight million, three hundred eighty-one thousand, eight hundred thirty-one".