331003081 has 2 divisors, whose sum is σ = 331003082. Its totient is φ = 331003080.

The previous prime is 331003069. The next prime is 331003111. The reversal of 331003081 is 180300133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194323600 + 136679481 = 13940^2 + 11691^2 .

It is a cyclic number.

It is not a de Polignac number, because 331003081 - 2¹³ = 330994889 is a prime.

It is a super-2 number, since 2×331003081² = 219126079262985122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (331003381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165501540 + 165501541.

It is an arithmetic number, because the mean of its divisors is an integer number (165501541).

Almost surely, 2^331003081 is an apocalyptic number.

It is an amenable number.

331003081 is a deficient number, since it is larger than the sum of its proper divisors (1).

331003081 is an equidigital number, since it uses as much as digits as its factorization.

331003081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 331003081 is about 18193.4900720010. The cubic root of 331003081 is about 691.7417879280.

The spelling of 331003081 in words is "three hundred thirty-one million, three thousand, eighty-one".