20313122206510 has 128 divisors (see below), whose sum is σ = 44357158103040. Its totient is φ = 6546674264064.

The previous prime is 20313122206499. The next prime is 20313122206513. The reversal of 20313122206510 is 1560222131302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313122206513) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 309349602 + ... + 309415258.

It is an arithmetic number, because the mean of its divisors is an integer number (346540297680).

Almost surely, 2^{20313122206510} is an apocalyptic number.

20313122206510 is an abundant number, since it is smaller than the sum of its proper divisors (24044035896530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20313122206510 is a wasteful number, since it uses less digits than its factorization.

20313122206510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69010.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 20313122206510 its reverse (1560222131302), we get a palindrome (21873344337812).

The spelling of 20313122206510 in words is "twenty trillion, three hundred thirteen billion, one hundred twenty-two million, two hundred six thousand, five hundred ten".