330040981 has 2 divisors, whose sum is σ = 330040982. Its totient is φ = 330040980.

The previous prime is 330040979. The next prime is 330040987. The reversal of 330040981 is 189040033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 328841956 + 1199025 = 18134^2 + 1095^2 .

It is a cyclic number.

It is not a de Polignac number, because 330040981 - 2¹ = 330040979 is a prime.

It is a super-2 number, since 2×330040981² = 217854098278884722, which contains 22 as substring.

Together with 330040979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (330040987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165020490 + 165020491.

It is an arithmetic number, because the mean of its divisors is an integer number (165020491).

Almost surely, 2^330040981 is an apocalyptic number.

It is an amenable number.

330040981 is a deficient number, since it is larger than the sum of its proper divisors (1).

330040981 is an equidigital number, since it uses as much as digits as its factorization.

330040981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 330040981 is about 18167.0300544696. The cubic root of 330040981 is about 691.0709274791.

The spelling of 330040981 in words is "three hundred thirty million, forty thousand, nine hundred eighty-one".