330981 has 8 divisors (see below), whose sum is σ = 504384. Its totient is φ = 189120.

The previous prime is 330943. The next prime is 330983. The reversal of 330981 is 189033.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 330981 - 2⁶ = 330917 is a prime.

It is a super-2 number, since 2×330981² = 219096844722, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 330981.

It is not an unprimeable number, because it can be changed into a prime (330983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7860 + ... + 7901.

It is an arithmetic number, because the mean of its divisors is an integer number (63048).

2³³⁰⁹⁸¹ is an apocalyptic number.

It is an amenable number.

330981 is a deficient number, since it is larger than the sum of its proper divisors (173403).

330981 is a wasteful number, since it uses less digits than its factorization.

330981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15771.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 330981 is about 575.3094819312. The cubic root of 330981 is about 69.1726405705.

The spelling of 330981 in words is "three hundred thirty thousand, nine hundred eighty-one".