12031231200 has 144 divisors (see below), whose sum is σ = 39226239360. Its totient is φ = 3203038720.

The previous prime is 12031231193. The next prime is 12031231229. The reversal of 12031231200 is 213213021.

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 12031231200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1577797 + ... + 1585403.

It is an arithmetic number, because the mean of its divisors is an integer number (272404440).

Almost surely, 2^12031231200 is an apocalyptic number.

12031231200 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 12031231200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19613119680).

12031231200 is an abundant number, since it is smaller than the sum of its proper divisors (27195008160).

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

12031231200 is a wasteful number, since it uses less digits than its factorization.

12031231200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8289 (or 8276 counting only the distinct ones).

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

Adding to 12031231200 its reverse (213213021), we get a palindrome (12244444221).

The spelling of 12031231200 in words is "twelve billion, thirty-one million, two hundred thirty-one thousand, two hundred".