20351310222313 has 16 divisors (see below), whose sum is σ = 23518396145664. Its totient is φ = 17249596689600.

The previous prime is 20351310222289. The next prime is 20351310222323. The reversal of 20351310222313 is 31322201315302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20351310222313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20351310222323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17495145 + ... + 18622102.

It is an arithmetic number, because the mean of its divisors is an integer number (1469899759104).

Almost surely, 2^{20351310222313} is an apocalyptic number.

It is an amenable number.

20351310222313 is a deficient number, since it is larger than the sum of its proper divisors (3167085923351).

20351310222313 is a wasteful number, since it uses less digits than its factorization.

20351310222313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36118152.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 20351310222313 its reverse (31322201315302), we get a palindrome (51673511537615).

The spelling of 20351310222313 in words is "twenty trillion, three hundred fifty-one billion, three hundred ten million, two hundred twenty-two thousand, three hundred thirteen".