20313131323310 has 16 divisors (see below), whose sum is σ = 41787013008096. Its totient is φ = 6964502167968.

The previous prime is 20313131323307. The next prime is 20313131323313. The reversal of 20313131323310 is 1332313131302.

It is an interprime number because it is at equal distance from previous prime (20313131323307) and next prime (20313131323313).

It is a super-2 number, since 2×20313131323310² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20313131323310.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313131323313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145093795097 + ... + 145093795236.

It is an arithmetic number, because the mean of its divisors is an integer number (2611688313006).

Almost surely, 2^{20313131323310} is an apocalyptic number.

20313131323310 is an abundant number, since it is smaller than the sum of its proper divisors (21473881684786).

20313131323310 is a wasteful number, since it uses less digits than its factorization.

20313131323310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290187590347.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 20313131323310 its reverse (1332313131302), we get a palindrome (21645444454612).

The spelling of 20313131323310 in words is "twenty trillion, three hundred thirteen billion, one hundred thirty-one million, three hundred twenty-three thousand, three hundred ten".