20032304321 has 2 divisors, whose sum is σ = 20032304322. Its totient is φ = 20032304320.

The previous prime is 20032304309. The next prime is 20032304323. The reversal of 20032304321 is 12340323002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17301719296 + 2730585025 = 131536^2 + 52255^2 .

It is a cyclic number.

It is not a de Polignac number, because 20032304321 - 2¹⁴ = 20032287937 is a prime.

Together with 20032304323, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20032304293 and 20032304302.

It is not a weakly prime, because it can be changed into another prime (20032304323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10016152160 + 10016152161.

It is an arithmetic number, because the mean of its divisors is an integer number (10016152161).

Almost surely, 2^20032304321 is an apocalyptic number.

It is an amenable number.

20032304321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20032304321 is an equidigital number, since it uses as much as digits as its factorization.

20032304321 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 20032304321 its reverse (12340323002), we get a palindrome (32372627323).

The spelling of 20032304321 in words is "twenty billion, thirty-two million, three hundred four thousand, three hundred twenty-one".