12031032312 has 96 divisors (see below), whose sum is σ = 35122258080. Its totient is φ = 3698507520.

The previous prime is 12031032217. The next prime is 12031032319. The reversal of 12031032312 is 21323013021.

12031032312 is a `hidden beast` number, since 1 + 20 + 310 + 323 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031032319) 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, 1152637 + ... + 1163027.

It is an arithmetic number, because the mean of its divisors is an integer number (365856855).

Almost surely, 2^12031032312 is an apocalyptic number.

12031032312 is a gapful number since it is divisible by the number (12) 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 12031032312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17561129040).

12031032312 is an abundant number, since it is smaller than the sum of its proper divisors (23091225768).

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

12031032312 is a wasteful number, since it uses less digits than its factorization.

12031032312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11653 (or 11646 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12031032312 its reverse (21323013021), we get a palindrome (33354045333).

The spelling of 12031032312 in words is "twelve billion, thirty-one million, thirty-two thousand, three hundred twelve".