12311311231228 has 48 divisors (see below), whose sum is σ = 22819389102720. Its totient is φ = 5795509362624.

The previous prime is 12311311231201. The next prime is 12311311231229. The reversal of 12311311231228 is 82213211311321.

It is a self number, because there is not a number n which added to its sum of digits gives 12311311231228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311311231229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282263550 + ... + 282307162.

It is an arithmetic number, because the mean of its divisors is an integer number (475403939640).

Almost surely, 2^{12311311231228} is an apocalyptic number.

It is an amenable number.

12311311231228 is a deficient number, since it is larger than the sum of its proper divisors (10508077871492).

12311311231228 is a wasteful number, since it uses less digits than its factorization.

12311311231228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66586 (or 66584 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

Adding to 12311311231228 its reverse (82213211311321), we get a palindrome (94524522542549).

The spelling of 12311311231228 in words is "twelve trillion, three hundred eleven billion, three hundred eleven million, two hundred thirty-one thousand, two hundred twenty-eight".