20310264613 has 2 divisors, whose sum is σ = 20310264614. Its totient is φ = 20310264612.

The previous prime is 20310264571. The next prime is 20310264641. The reversal of 20310264613 is 31646201302.

It is an a-pointer prime, because the next prime (20310264641) can be obtained adding 20310264613 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19818445284 + 491819329 = 140778^2 + 22177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20310264613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20310264913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155132306 + 10155132307.

It is an arithmetic number, because the mean of its divisors is an integer number (10155132307).

Almost surely, 2^20310264613 is an apocalyptic number.

It is an amenable number.

20310264613 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310264613 is an equidigital number, since it uses as much as digits as its factorization.

20310264613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 20310264613 its reverse (31646201302), we get a palindrome (51956465915).

The spelling of 20310264613 in words is "twenty billion, three hundred ten million, two hundred sixty-four thousand, six hundred thirteen".