1031310021020 has 48 divisors (see below), whose sum is σ = 2203954710048. Its totient is φ = 405302042880.

The previous prime is 1031310020987. The next prime is 1031310021037. The reversal of 1031310021020 is 201200131301.

1031310021020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1031310020986 and 1031310021004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1415759 + ... + 2016678.

It is an arithmetic number, because the mean of its divisors is an integer number (45915723126).

Almost surely, 2^{1031310021020} is an apocalyptic number.

1031310021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031310021020 is an abundant number, since it is smaller than the sum of its proper divisors (1172644689028).

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

1031310021020 is a wasteful number, since it uses less digits than its factorization.

1031310021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3432710 (or 3432708 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1031310021020 its reverse (201200131301), we get a palindrome (1232510152321).

The spelling of 1031310021020 in words is "one trillion, thirty-one billion, three hundred ten million, twenty-one thousand, twenty".