12031322208 has 96 divisors (see below), whose sum is σ = 32742807552. Its totient is φ = 3864192000.

The previous prime is 12031322167. The next prime is 12031322231. The reversal of 12031322208 is 80222313021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684733 + ... + 702083.

It is an arithmetic number, because the mean of its divisors is an integer number (341070912).

Almost surely, 2^12031322208 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 12031322208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16371403776).

12031322208 is an abundant number, since it is smaller than the sum of its proper divisors (20711485344).

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

12031322208 is a wasteful number, since it uses less digits than its factorization.

12031322208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17628 (or 17620 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 12031322208 its reverse (80222313021), we get a palindrome (92253635229).

The spelling of 12031322208 in words is "twelve billion, thirty-one million, three hundred twenty-two thousand, two hundred eight".