12311040042 has 64 divisors (see below), whose sum is σ = 33105335040. Its totient is φ = 3310530048.

The previous prime is 12311040023. The next prime is 12311040121. The reversal of 12311040042 is 24004011321.

12311040042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12311039997 and 12311040024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 951483 + ... + 964334.

It is an arithmetic number, because the mean of its divisors is an integer number (517270860).

Almost surely, 2^12311040042 is an apocalyptic number.

12311040042 is an abundant number, since it is smaller than the sum of its proper divisors (20794294998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12311040042 is a wasteful number, since it uses less digits than its factorization.

12311040042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915852 (or 1915846 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12311040042 its reverse (24004011321), we get a palindrome (36315051363).

The spelling of 12311040042 in words is "twelve billion, three hundred eleven million, forty thousand, forty-two".