12311343442 has 16 divisors (see below), whose sum is σ = 18818665920. Its totient is φ = 6038884368.

The previous prime is 12311343433. The next prime is 12311343467. The reversal of 12311343442 is 24434311321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12311343442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49653 + ... + 164584.

It is an arithmetic number, because the mean of its divisors is an integer number (1176166620).

Almost surely, 2^12311343442 is an apocalyptic number.

12311343442 is a deficient number, since it is larger than the sum of its proper divisors (6507322478).

12311343442 is a wasteful number, since it uses less digits than its factorization.

12311343442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214785.

The product of its digits is 6912, while the sum is 28.

Adding to 12311343442 its reverse (24434311321), we get a palindrome (36745654763).

The spelling of 12311343442 in words is "twelve billion, three hundred eleven million, three hundred forty-three thousand, four hundred forty-two".