1031322202020 has 432 divisors, whose sum is σ = 3596125059072. Its totient is φ = 237233525760.

The previous prime is 1031322202013. The next prime is 1031322202021. The reversal of 1031322202020 is 202022231301.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1031322201984 and 1031322202002.

It is not an unprimeable number, because it can be changed into a prime (1031322202021) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 133018464 + ... + 133026216.

Almost surely, 2^{1031322202020} is an apocalyptic number.

1031322202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1031322202020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1798062529536).

1031322202020 is an abundant number, since it is smaller than the sum of its proper divisors (2564802857052).

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

1031322202020 is a wasteful number, since it uses less digits than its factorization.

1031322202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7952 (or 7924 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1031322202020 its reverse (202022231301), we get a palindrome (1233344433321).

The spelling of 1031322202020 in words is "one trillion, thirty-one billion, three hundred twenty-two million, two hundred two thousand, twenty".