12031331208 has 64 divisors (see below), whose sum is σ = 32475643200. Its totient is φ = 3692394240.

The previous prime is 12031331173. The next prime is 12031331209. The reversal of 12031331208 is 80213313021.

12031331208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (12031331209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71803 + ... + 170933.

It is an arithmetic number, because the mean of its divisors is an integer number (507431925).

Almost surely, 2^12031331208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12031331208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16237821600).

12031331208 is an abundant number, since it is smaller than the sum of its proper divisors (20444311992).

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

12031331208 is a wasteful number, since it uses less digits than its factorization.

12031331208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99542 (or 99538 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 12031331208 its reverse (80213313021), we get a palindrome (92244644229).

The spelling of 12031331208 in words is "twelve billion, thirty-one million, three hundred thirty-one thousand, two hundred eight".