20310212313 has 6 divisors (see below), whose sum is σ = 29336973354. Its totient is φ = 13540141536.

The previous prime is 20310212297. The next prime is 20310212323. The reversal of 20310212313 is 31321201302.

20310212313 is a `hidden beast` number, since 20 + 310 + 21 + 2 + 313 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19941111369 + 369100944 = 141213^2 + 19212^2 .

It is not a de Polignac number, because 20310212313 - 2⁴ = 20310212297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20310212323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1128345120 + ... + 1128345137.

It is an arithmetic number, because the mean of its divisors is an integer number (4889495559).

Almost surely, 2^20310212313 is an apocalyptic number.

It is an amenable number.

20310212313 is a deficient number, since it is larger than the sum of its proper divisors (9026761041).

20310212313 is a wasteful number, since it uses less digits than its factorization.

20310212313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256690263 (or 2256690260 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20310212313 its reverse (31321201302), we get a palindrome (51631413615).

The spelling of 20310212313 in words is "twenty billion, three hundred ten million, two hundred twelve thousand, three hundred thirteen".