12331113123 has 16 divisors (see below), whose sum is σ = 19190062080. Its totient is φ = 6896427456.

The previous prime is 12331113121. The next prime is 12331113143. The reversal of 12331113123 is 32131113321.

It is a happy number.

It is not a de Polignac number, because 12331113123 - 2¹ = 12331113121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 12331113123.

It is not an unprimeable number, because it can be changed into a prime (12331113121) 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, 6245778 + ... + 6247751.

It is an arithmetic number, because the mean of its divisors is an integer number (1199378880).

Almost surely, 2^12331113123 is an apocalyptic number.

12331113123 is a deficient number, since it is larger than the sum of its proper divisors (6858948957).

12331113123 is a wasteful number, since it uses less digits than its factorization.

12331113123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12493586.

The product of its digits is 324, while the sum is 21.

Adding to 12331113123 its reverse (32131113321), we get a palindrome (44462226444).

The spelling of 12331113123 in words is "twelve billion, three hundred thirty-one million, one hundred thirteen thousand, one hundred twenty-three".