330020321 has 4 divisors (see below), whose sum is σ = 330246144. Its totient is φ = 329794500.

The previous prime is 330020297. The next prime is 330020351. The reversal of 330020321 is 123020033.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123020033 = 43 ⋅2860931.

It is a cyclic number.

It is not a de Polignac number, because 330020321 - 2¹⁴ = 330003937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 330020296 and 330020305.

It is not an unprimeable number, because it can be changed into a prime (330020351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110705 + ... + 113646.

It is an arithmetic number, because the mean of its divisors is an integer number (82561536).

Almost surely, 2^330020321 is an apocalyptic number.

It is an amenable number.

330020321 is a deficient number, since it is larger than the sum of its proper divisors (225823).

330020321 is a wasteful number, since it uses less digits than its factorization.

330020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225822.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 330020321 is about 18166.4614330915. The cubic root of 330020321 is about 691.0565072262.

Adding to 330020321 its reverse (123020033), we get a palindrome (453040354).

The spelling of 330020321 in words is "three hundred thirty million, twenty thousand, three hundred twenty-one".