20302211317 has 2 divisors, whose sum is σ = 20302211318. Its totient is φ = 20302211316.

The previous prime is 20302211311. The next prime is 20302211407. The reversal of 20302211317 is 71311220302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10191104401 + 10111106916 = 100951^2 + 100554^2 .

It is a cyclic number.

It is not a de Polignac number, because 20302211317 - 2¹¹ = 20302209269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20302211311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151105658 + 10151105659.

It is an arithmetic number, because the mean of its divisors is an integer number (10151105659).

Almost surely, 2^20302211317 is an apocalyptic number.

It is an amenable number.

20302211317 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302211317 is an equidigital number, since it uses as much as digits as its factorization.

20302211317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 20302211317 its reverse (71311220302), we get a palindrome (91613431619).

The spelling of 20302211317 in words is "twenty billion, three hundred two million, two hundred eleven thousand, three hundred seventeen".