12440331113 has 4 divisors (see below), whose sum is σ = 14217521280. Its totient is φ = 10663140948.

The previous prime is 12440331109. The next prime is 12440331131. The reversal of 12440331113 is 31113304421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31113304421 = 1559 ⋅19957219.

It is a cyclic number.

It is not a de Polignac number, because 12440331113 - 2² = 12440331109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12440331143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888595073 + ... + 888595086.

It is an arithmetic number, because the mean of its divisors is an integer number (3554380320).

Almost surely, 2^12440331113 is an apocalyptic number.

It is an amenable number.

12440331113 is a deficient number, since it is larger than the sum of its proper divisors (1777190167).

12440331113 is an equidigital number, since it uses as much as digits as its factorization.

12440331113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777190166.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12440331113 its reverse (31113304421), we get a palindrome (43553635534).

The spelling of 12440331113 in words is "twelve billion, four hundred forty million, three hundred thirty-one thousand, one hundred thirteen".