1031200312020 has 24 divisors (see below), whose sum is σ = 2887360873824. Its totient is φ = 274986749856.

The previous prime is 1031200312007. The next prime is 1031200312061. The reversal of 1031200312020 is 202130021301.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8593335874 + ... + 8593335993.

It is an arithmetic number, because the mean of its divisors is an integer number (120306703076).

Almost surely, 2^{1031200312020} is an apocalyptic number.

1031200312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031200312020 is an abundant number, since it is smaller than the sum of its proper divisors (1856160561804).

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

1031200312020 is a wasteful number, since it uses less digits than its factorization.

1031200312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17186671879 (or 17186671877 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1031200312020 its reverse (202130021301), we get a palindrome (1233330333321).

The spelling of 1031200312020 in words is "one trillion, thirty-one billion, two hundred million, three hundred twelve thousand, twenty".