12311756442 has 48 divisors (see below), whose sum is σ = 27158976000. Its totient is φ = 4029695232.

The previous prime is 12311756437. The next prime is 12311756447. The reversal of 12311756442 is 24465711321.

12311756442 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 1 + 7 + 5 + 644 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (12311756437) and next prime (12311756447).

It is a junction number, because it is equal to n+sod(n) for n = 12311756397 and 12311756406.

It is not an unprimeable number, because it can be changed into a prime (12311756447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 980359 + ... + 992837.

It is an arithmetic number, because the mean of its divisors is an integer number (565812000).

Almost surely, 2^12311756442 is an apocalyptic number.

12311756442 is an abundant number, since it is smaller than the sum of its proper divisors (14847219558).

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

12311756442 is a wasteful number, since it uses less digits than its factorization.

12311756442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13475 (or 13472 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The spelling of 12311756442 in words is "twelve billion, three hundred eleven million, seven hundred fifty-six thousand, four hundred forty-two".