1311323304044 has 12 divisors (see below), whose sum is σ = 2471340073104. Its totient is φ = 605226140304.

The previous prime is 1311323304037. The next prime is 1311323304047. The reversal of 1311323304044 is 4404033231131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1311323303998 and 1311323304016.

It is not an unprimeable number, because it can be changed into a prime (1311323304047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12608877872 + ... + 12608877975.

It is an arithmetic number, because the mean of its divisors is an integer number (205945006092).

Almost surely, 2^{1311323304044} is an apocalyptic number.

It is an amenable number.

1311323304044 is a deficient number, since it is larger than the sum of its proper divisors (1160016769060).

1311323304044 is a wasteful number, since it uses less digits than its factorization.

1311323304044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25217755864 (or 25217755862 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 1311323304044 its reverse (4404033231131), we get a palindrome (5715356535175).

The spelling of 1311323304044 in words is "one trillion, three hundred eleven billion, three hundred twenty-three million, three hundred four thousand, forty-four".