20023330321 has 4 divisors (see below), whose sum is σ = 20023654000. Its totient is φ = 20023006644.

The previous prime is 20023330319. The next prime is 20023330339. The reversal of 20023330321 is 12303332002.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 20023330321 - 2¹ = 20023330319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20023330391) 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, 36891 + ... + 203488.

It is an arithmetic number, because the mean of its divisors is an integer number (5005913500).

Almost surely, 2^20023330321 is an apocalyptic number.

It is an amenable number.

20023330321 is a deficient number, since it is larger than the sum of its proper divisors (323679).

20023330321 is an equidigital number, since it uses as much as digits as its factorization.

20023330321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323678.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20023330321 its reverse (12303332002), we get a palindrome (32326662323).

The spelling of 20023330321 in words is "twenty billion, twenty-three million, three hundred thirty thousand, three hundred twenty-one".