12031232144 has 10 divisors (see below), whose sum is σ = 23310512310. Its totient is φ = 6015616064.

The previous prime is 12031232141. The next prime is 12031232189. The reversal of 12031232144 is 44123213021.

It can be written as a sum of positive squares in only one way, i.e., 8079852544 + 3951379600 = 89888^2 + 62860^2 .

It is not an unprimeable number, because it can be changed into a prime (12031232141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 375975989 + ... + 375976020.

It is an arithmetic number, because the mean of its divisors is an integer number (2331051231).

Almost surely, 2^12031232144 is an apocalyptic number.

It is an amenable number.

12031232144 is a deficient number, since it is larger than the sum of its proper divisors (11279280166).

12031232144 is an equidigital number, since it uses as much as digits as its factorization.

12031232144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751952017 (or 751952011 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12031232144 its reverse (44123213021), we get a palindrome (56154445165).

The spelling of 12031232144 in words is "twelve billion, thirty-one million, two hundred thirty-two thousand, one hundred forty-four".