20135313343213 has 8 divisors (see below), whose sum is σ = 20908972228536. Its totient is φ = 19375109395200.

The previous prime is 20135313343193. The next prime is 20135313343247. The reversal of 20135313343213 is 31234331353102.

It can be written as a sum of positive squares in 4 ways, for example, as 3209766062724 + 16925547280489 = 1791582^2 + 4114067^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20135313343213 - 2³³ = 20126723408621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135313347213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3363731278 + ... + 3363737263.

It is an arithmetic number, because the mean of its divisors is an integer number (2613621528567).

Almost surely, 2^{20135313343213} is an apocalyptic number.

It is an amenable number.

20135313343213 is a deficient number, since it is larger than the sum of its proper divisors (773658885323).

20135313343213 is an equidigital number, since it uses as much as digits as its factorization.

20135313343213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6727468655.

The product of its (nonzero) digits is 58320, while the sum is 34.

Adding to 20135313343213 its reverse (31234331353102), we get a palindrome (51369644696315).

The spelling of 20135313343213 in words is "twenty trillion, one hundred thirty-five billion, three hundred thirteen million, three hundred forty-three thousand, two hundred thirteen".