31322203130020 has 96 divisors (see below), whose sum is σ = 76024514684160. Its totient is φ = 10713233879040.

The previous prime is 31322203129993. The next prime is 31322203130027. The reversal of 31322203130020 is 2003130222313.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 31322203129973 and 31322203130000.

It is not an unprimeable number, because it can be changed into a prime (31322203130027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3415137 + ... + 8620183.

It is an arithmetic number, because the mean of its divisors is an integer number (791922027960).

Almost surely, 2^{31322203130020} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31322203130020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38012257342080).

31322203130020 is an abundant number, since it is smaller than the sum of its proper divisors (44702311554140).

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

31322203130020 is a wasteful number, since it uses less digits than its factorization.

31322203130020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5206693 (or 5206691 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31322203130020 its reverse (2003130222313), we get a palindrome (33325333352333).

The spelling of 31322203130020 in words is "thirty-one trillion, three hundred twenty-two billion, two hundred three million, one hundred thirty thousand, twenty".