20304230321 has 2 divisors, whose sum is σ = 20304230322. Its totient is φ = 20304230320.

The previous prime is 20304230299. The next prime is 20304230341. The reversal of 20304230321 is 12303240302.

It is an a-pointer prime, because the next prime (20304230341) can be obtained adding 20304230321 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12641854096 + 7662376225 = 112436^2 + 87535^2 .

It is a cyclic number.

It is not a de Polignac number, because 20304230321 - 2⁶ = 20304230257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20304230293 and 20304230302.

It is not a weakly prime, because it can be changed into another prime (20304230341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10152115160 + 10152115161.

It is an arithmetic number, because the mean of its divisors is an integer number (10152115161).

Almost surely, 2^20304230321 is an apocalyptic number.

It is an amenable number.

20304230321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20304230321 is an equidigital number, since it uses as much as digits as its factorization.

20304230321 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 20304230321 its reverse (12303240302), we get a palindrome (32607470623).

The spelling of 20304230321 in words is "twenty billion, three hundred four million, two hundred thirty thousand, three hundred twenty-one".