1311563030643 has 24 divisors (see below), whose sum is σ = 1907568146432. Its totient is φ = 868342891248.

The previous prime is 1311563030633. The next prime is 1311563030663. The reversal of 1311563030643 is 3460303651131.

1311563030643 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 5 + 6 + 3 + 0 + 3 + 0 + 643 = 666.

It is not a de Polignac number, because 1311563030643 - 2¹⁶ = 1311562965107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311563030598 and 1311563030607.

It is not an unprimeable number, because it can be changed into a prime (1311563030633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1568430 + ... + 2254572.

Almost surely, 2^{1311563030643} is an apocalyptic number.

1311563030643 is a deficient number, since it is larger than the sum of its proper divisors (596005115789).

1311563030643 is a wasteful number, since it uses less digits than its factorization.

1311563030643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687615 (or 687612 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

Adding to 1311563030643 its reverse (3460303651131), we get a palindrome (4771866681774).

The spelling of 1311563030643 in words is "one trillion, three hundred eleven billion, five hundred sixty-three million, thirty thousand, six hundred forty-three".