20310133213613 has 2 divisors, whose sum is σ = 20310133213614. Its totient is φ = 20310133213612.

The previous prime is 20310133213541. The next prime is 20310133213681. The reversal of 20310133213613 is 31631233101302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14294312531524 + 6015820682089 = 3780782^2 + 2452717^2 .

It is a cyclic number.

It is not a de Polignac number, because 20310133213613 - 2¹⁴ = 20310133197229 is a prime.

It is a super-2 number, since 2×20310133213613² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20310133216613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155066606806 + 10155066606807.

It is an arithmetic number, because the mean of its divisors is an integer number (10155066606807).

Almost surely, 2^{20310133213613} is an apocalyptic number.

It is an amenable number.

20310133213613 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310133213613 is an equidigital number, since it uses as much as digits as its factorization.

20310133213613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 20310133213613 its reverse (31631233101302), we get a palindrome (51941366314915).

The spelling of 20310133213613 in words is "twenty trillion, three hundred ten billion, one hundred thirty-three million, two hundred thirteen thousand, six hundred thirteen".