330231281 has 2 divisors, whose sum is σ = 330231282. Its totient is φ = 330231280.

The previous prime is 330231277. The next prime is 330231283. The reversal of 330231281 is 182132033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181171600 + 149059681 = 13460^2 + 12209^2 .

It is a cyclic number.

It is not a de Polignac number, because 330231281 - 2² = 330231277 is a prime.

It is a super-2 number, since 2×330231281² = 218105397901801922, which contains 22 as substring.

Together with 330231283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (330231283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165115640 + 165115641.

It is an arithmetic number, because the mean of its divisors is an integer number (165115641).

Almost surely, 2^330231281 is an apocalyptic number.

It is an amenable number.

330231281 is a deficient number, since it is larger than the sum of its proper divisors (1).

330231281 is an equidigital number, since it uses as much as digits as its factorization.

330231281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 330231281 is about 18172.2668096195. The cubic root of 330231281 is about 691.2037246538.

The spelling of 330231281 in words is "three hundred thirty million, two hundred thirty-one thousand, two hundred eighty-one".