20020331313 has 12 divisors (see below), whose sum is σ = 29266670160. Its totient is φ = 13186081176.

The previous prime is 20020331311. The next prime is 20020331321. The reversal of 20020331313 is 31313302002.

20020331313 is a `hidden beast` number, since 2 + 0 + 0 + 20 + 331 + 313 = 666.

It is not a de Polignac number, because 20020331313 - 2¹ = 20020331311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20020331311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13399743 + ... + 13401236.

It is an arithmetic number, because the mean of its divisors is an integer number (2438889180).

Almost surely, 2^20020331313 is an apocalyptic number.

It is an amenable number.

20020331313 is a deficient number, since it is larger than the sum of its proper divisors (9246338847).

20020331313 is a wasteful number, since it uses less digits than its factorization.

20020331313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26801068 (or 26801065 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20020331313 its reverse (31313302002), we get a palindrome (51333633315).

The spelling of 20020331313 in words is "twenty billion, twenty million, three hundred thirty-one thousand, three hundred thirteen".