330340981 has 2 divisors, whose sum is σ = 330340982. Its totient is φ = 330340980.

The previous prime is 330340963. The next prime is 330341009. The reversal of 330340981 is 189043033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175562500 + 154778481 = 13250^2 + 12441^2 .

It is an emirp because it is prime and its reverse (189043033) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 330340981 - 2¹¹ = 330338933 is a prime.

It is a super-2 number, since 2×330340981² = 218250327456084722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (330340951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165170490 + 165170491.

It is an arithmetic number, because the mean of its divisors is an integer number (165170491).

Almost surely, 2^330340981 is an apocalyptic number.

It is an amenable number.

330340981 is a deficient number, since it is larger than the sum of its proper divisors (1).

330340981 is an equidigital number, since it uses as much as digits as its factorization.

330340981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 330340981 is about 18175.2848946034. The cubic root of 330340981 is about 691.2802534973.

The spelling of 330340981 in words is "three hundred thirty million, three hundred forty thousand, nine hundred eighty-one".