12231231144 has 32 divisors (see below), whose sum is σ = 33357903840. Its totient is φ = 3706433600.

The previous prime is 12231231121. The next prime is 12231231149. The reversal of 12231231144 is 44113213221.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12231231149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23164947 + ... + 23165474.

It is an arithmetic number, because the mean of its divisors is an integer number (1042434495).

Almost surely, 2^12231231144 is an apocalyptic number.

It is an amenable number.

12231231144 is an abundant number, since it is smaller than the sum of its proper divisors (21126672696).

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

12231231144 is a wasteful number, since it uses less digits than its factorization.

12231231144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46330441 (or 46330437 counting only the distinct ones).

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

Adding to 12231231144 its reverse (44113213221), we get a palindrome (56344444365).

The spelling of 12231231144 in words is "twelve billion, two hundred thirty-one million, two hundred thirty-one thousand, one hundred forty-four".