1031311022020 has 12 divisors (see below), whose sum is σ = 2165753146284. Its totient is φ = 412524408800.

The previous prime is 1031311022011. The next prime is 1031311022033. The reversal of 1031311022020 is 202201131301.

It can be written as a sum of positive squares in 2 ways, for example, as 678738708736 + 352572313284 = 823856^2 + 593778^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1031311021985 and 1031311022003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25782775531 + ... + 25782775570.

It is an arithmetic number, because the mean of its divisors is an integer number (180479428857).

Almost surely, 2^{1031311022020} is an apocalyptic number.

1031311022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031311022020 is an abundant number, since it is smaller than the sum of its proper divisors (1134442124264).

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

1031311022020 is a wasteful number, since it uses less digits than its factorization.

1031311022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51565551110 (or 51565551108 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1031311022020 its reverse (202201131301), we get a palindrome (1233512153321).

The spelling of 1031311022020 in words is "one trillion, thirty-one billion, three hundred eleven million, twenty-two thousand, twenty".