20023304321 has 2 divisors, whose sum is σ = 20023304322. Its totient is φ = 20023304320.

The previous prime is 20023304291. The next prime is 20023304381. The reversal of 20023304321 is 12340332002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11565927025 + 8457377296 = 107545^2 + 91964^2 .

It is a cyclic number.

It is not a de Polignac number, because 20023304321 - 2¹⁰ = 20023303297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20023304293 and 20023304302.

It is not a weakly prime, because it can be changed into another prime (20023304381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011652160 + 10011652161.

It is an arithmetic number, because the mean of its divisors is an integer number (10011652161).

Almost surely, 2^20023304321 is an apocalyptic number.

It is an amenable number.

20023304321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20023304321 is an equidigital number, since it uses as much as digits as its factorization.

20023304321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20023304321 its reverse (12340332002), we get a palindrome (32363636323).

The spelling of 20023304321 in words is "twenty billion, twenty-three million, three hundred four thousand, three hundred twenty-one".