1031330021020 has 48 divisors (see below), whose sum is σ = 2335356622368. Its totient is φ = 380314840320.

The previous prime is 1031330020993. The next prime is 1031330021023. The reversal of 1031330021020 is 201200331301.

It is a super-2 number, since 2×1031330021020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1031330020985 and 1031330021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031330021023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2315491 + ... + 2724730.

It is an arithmetic number, because the mean of its divisors is an integer number (48653262966).

Almost surely, 2^{1031330021020} is an apocalyptic number.

1031330021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031330021020 is an abundant number, since it is smaller than the sum of its proper divisors (1304026601348).

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

1031330021020 is a wasteful number, since it uses less digits than its factorization.

1031330021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5041030 (or 5041028 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 1031330021020 its reverse (201200331301), we get a palindrome (1232530352321).

The spelling of 1031330021020 in words is "one trillion, thirty-one billion, three hundred thirty million, twenty-one thousand, twenty".