3000020321 has 16 divisors (see below), whose sum is σ = 3123014400. Its totient is φ = 2879997120.

The previous prime is 3000020299. The next prime is 3000020327. The reversal of 3000020321 is 1230200003.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3000020321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3000020327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 641036 + ... + 645698.

It is an arithmetic number, because the mean of its divisors is an integer number (195188400).

Almost surely, 2^3000020321 is an apocalyptic number.

It is an amenable number.

3000020321 is a deficient number, since it is larger than the sum of its proper divisors (122994079).

3000020321 is a wasteful number, since it uses less digits than its factorization.

3000020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4976.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 3000020321 is about 54772.4412547040. The cubic root of 3000020321 is about 1442.2528267393.

Adding to 3000020321 its reverse (1230200003), we get a palindrome (4230220324).

The spelling of 3000020321 in words is "three billion, twenty thousand, three hundred twenty-one".