1231300120200 has 96 divisors (see below), whose sum is σ = 3819251489760. Its totient is φ = 328155635200.

The previous prime is 1231300120153. The next prime is 1231300120201. The reversal of 1231300120200 is 20210031321.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1231300120200.

It is not an unprimeable number, because it can be changed into a prime (1231300120201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 436387 + ... + 1628813.

It is an arithmetic number, because the mean of its divisors is an integer number (39783869685).

Almost surely, 2^{1231300120200} is an apocalyptic number.

1231300120200 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 1231300120200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1909625744880).

1231300120200 is an abundant number, since it is smaller than the sum of its proper divisors (2587951369560).

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

1231300120200 is a wasteful number, since it uses less digits than its factorization.

1231300120200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194167 (or 1194158 counting only the distinct ones).

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

Adding to 1231300120200 its reverse (20210031321), we get a palindrome (1251510151521).

The spelling of 1231300120200 in words is "one trillion, two hundred thirty-one billion, three hundred million, one hundred twenty thousand, two hundred".