330381 has 6 divisors (see below), whose sum is σ = 477230. Its totient is φ = 220248.

The previous prime is 330359. The next prime is 330383. The reversal of 330381 is 183033.

It can be written as a sum of positive squares in only one way, i.e., 275625 + 54756 = 525^2 + 234^2 .

It is not a de Polignac number, because 330381 - 2¹¹ = 328333 is a prime.

It is a super-2 number, since 2×330381² = 218303210322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18346 + ... + 18363.

2³³⁰³⁸¹ is an apocalyptic number.

It is an amenable number.

330381 is a deficient number, since it is larger than the sum of its proper divisors (146849).

330381 is a wasteful number, since it uses less digits than its factorization.

330381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36715 (or 36712 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 330381 is about 574.7877869266. The cubic root of 330381 is about 69.1308167309.

The spelling of 330381 in words is "three hundred thirty thousand, three hundred eighty-one".