20431114321 has 2 divisors, whose sum is σ = 20431114322. Its totient is φ = 20431114320.

The previous prime is 20431114289. The next prime is 20431114349. The reversal of 20431114321 is 12341113402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12306796096 + 8124318225 = 110936^2 + 90135^2 .

It is a cyclic number.

It is not a de Polignac number, because 20431114321 - 2⁵ = 20431114289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20431114292 and 20431114301.

It is not a weakly prime, because it can be changed into another prime (20431114021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215557160 + 10215557161.

It is an arithmetic number, because the mean of its divisors is an integer number (10215557161).

Almost surely, 2^20431114321 is an apocalyptic number.

It is an amenable number.

20431114321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20431114321 is an equidigital number, since it uses as much as digits as its factorization.

20431114321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20431114321 its reverse (12341113402), we get a palindrome (32772227723).

The spelling of 20431114321 in words is "twenty billion, four hundred thirty-one million, one hundred fourteen thousand, three hundred twenty-one".