20313022131 has 40 divisors (see below), whose sum is σ = 31701661200. Its totient is φ = 12945441600.

The previous prime is 20313022129. The next prime is 20313022139. The reversal of 20313022131 is 13122031302.

It is not a de Polignac number, because 20313022131 - 2¹ = 20313022129 is a prime.

It is a super-2 number, since 2×20313022131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20313022139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 194440 + ... + 280058.

It is an arithmetic number, because the mean of its divisors is an integer number (792541530).

Almost surely, 2^20313022131 is an apocalyptic number.

20313022131 is a deficient number, since it is larger than the sum of its proper divisors (11388639069).

20313022131 is a wasteful number, since it uses less digits than its factorization.

20313022131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85761 (or 85752 counting only the distinct ones).

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

Adding to 20313022131 its reverse (13122031302), we get a palindrome (33435053433).

The spelling of 20313022131 in words is "twenty billion, three hundred thirteen million, twenty-two thousand, one hundred thirty-one".