1031203321120 has 96 divisors (see below), whose sum is σ = 2789196052608. Its totient is φ = 352927223808.

The previous prime is 1031203321063. The next prime is 1031203321151. The reversal of 1031203321120 is 211233021301.

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, 187129 + ... + 1448248.

It is an arithmetic number, because the mean of its divisors is an integer number (29054125548).

Almost surely, 2^{1031203321120} is an apocalyptic number.

1031203321120 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 1031203321120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1394598026304).

1031203321120 is an abundant number, since it is smaller than the sum of its proper divisors (1757992731488).

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

1031203321120 is a wasteful number, since it uses less digits than its factorization.

1031203321120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635962 (or 1635954 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1031203321120 its reverse (211233021301), we get a palindrome (1242436342421).

The spelling of 1031203321120 in words is "one trillion, thirty-one billion, two hundred three million, three hundred twenty-one thousand, one hundred twenty".