12440323113 has 32 divisors (see below), whose sum is σ = 17282764800. Its totient is φ = 7952711616.

The previous prime is 12440323109. The next prime is 12440323141. The reversal of 12440323113 is 31132304421.

It is a happy number.

It is not a de Polignac number, because 12440323113 - 2² = 12440323109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12440323913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4411618 + ... + 4414436.

It is an arithmetic number, because the mean of its divisors is an integer number (540086400).

Almost surely, 2^12440323113 is an apocalyptic number.

It is an amenable number.

12440323113 is a deficient number, since it is larger than the sum of its proper divisors (4842441687).

12440323113 is a wasteful number, since it uses less digits than its factorization.

12440323113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 12440323113 its reverse (31132304421), we get a palindrome (43572627534).

The spelling of 12440323113 in words is "twelve billion, four hundred forty million, three hundred twenty-three thousand, one hundred thirteen".