328770931 has 2 divisors, whose sum is σ = 328770932. Its totient is φ = 328770930.

The previous prime is 328770919. The next prime is 328770961. The reversal of 328770931 is 139077823.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 328770931 - 2⁵ = 328770899 is a prime.

It is a super-2 number, since 2×328770931² = 216180650141213522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (328770961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164385465 + 164385466.

It is an arithmetic number, because the mean of its divisors is an integer number (164385466).

Almost surely, 2^328770931 is an apocalyptic number.

328770931 is a deficient number, since it is larger than the sum of its proper divisors (1).

328770931 is an equidigital number, since it uses as much as digits as its factorization.

328770931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 328770931 is about 18132.0415563168. The cubic root of 328770931 is about 690.1833378250.

The spelling of 328770931 in words is "three hundred twenty-eight million, seven hundred seventy thousand, nine hundred thirty-one".