12031182720 has 448 divisors, whose sum is σ = 43706971440. Its totient is φ = 3165143040.

The previous prime is 12031182719. The next prime is 12031182767. The reversal of 12031182720 is 2728113021.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 49921800 + ... + 49922040.

Almost surely, 2^12031182720 is an apocalyptic number.

12031182720 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 12031182720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21853485720).

12031182720 is an abundant number, since it is smaller than the sum of its proper divisors (31675788720).

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

12031182720 is an equidigital number, since it uses as much as digits as its factorization.

12031182720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

Adding to 12031182720 its reverse (2728113021), we get a palindrome (14759295741).

The spelling of 12031182720 in words is "twelve billion, thirty-one million, one hundred eighty-two thousand, seven hundred twenty".