1312223287844 has 48 divisors (see below), whose sum is σ = 2739629899776. Its totient is φ = 537718500000.

The previous prime is 1312223287819. The next prime is 1312223287847. The reversal of 1312223287844 is 4487823222131.

It is not an unprimeable number, because it can be changed into a prime (1312223287847) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1243469 + ... + 2042219.

It is an arithmetic number, because the mean of its divisors is an integer number (57075622912).

Almost surely, 2^{1312223287844} is an apocalyptic number.

1312223287844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1312223287844 is an abundant number, since it is smaller than the sum of its proper divisors (1427406611932).

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

1312223287844 is a wasteful number, since it uses less digits than its factorization.

1312223287844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801336 (or 801334 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 47.

The spelling of 1312223287844 in words is "one trillion, three hundred twelve billion, two hundred twenty-three million, two hundred eighty-seven thousand, eight hundred forty-four".