1031993898240 has 144 divisors (see below), whose sum is σ = 3296960847936. Its totient is φ = 275112345600.

The previous prime is 1031993898211. The next prime is 1031993898323. The reversal of 1031993898240 is 428983991301.

It is a super-2 number, since 2×1031993898240² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

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, 12750700 + ... + 12831380.

It is an arithmetic number, because the mean of its divisors is an integer number (22895561444).

Almost surely, 2^{1031993898240} is an apocalyptic number.

1031993898240 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 1031993898240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1648480423968).

1031993898240 is an abundant number, since it is smaller than the sum of its proper divisors (2264966949696).

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

1031993898240 is an equidigital number, since it uses as much as digits as its factorization.

1031993898240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84036 (or 84022 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 57.

The spelling of 1031993898240 in words is "one trillion, thirty-one billion, nine hundred ninety-three million, eight hundred ninety-eight thousand, two hundred forty".