1311615216344 has 16 divisors (see below), whose sum is σ = 2488908393720. Its totient is φ = 647906311360.

The previous prime is 1311615216323. The next prime is 1311615216347. The reversal of 1311615216344 is 4436125161131.

It is a junction number, because it is equal to n+sod(n) for n = 1311615216298 and 1311615216307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311615216347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 987661397 + ... + 987662724.

Almost surely, 2^{1311615216344} is an apocalyptic number.

It is an amenable number.

1311615216344 is a deficient number, since it is larger than the sum of its proper divisors (1177293177376).

1311615216344 is a wasteful number, since it uses less digits than its factorization.

1311615216344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975324210 (or 1975324206 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The spelling of 1311615216344 in words is "one trillion, three hundred eleven billion, six hundred fifteen million, two hundred sixteen thousand, three hundred forty-four".