1311446355613 has 4 divisors (see below), whose sum is σ = 1311453156348. Its totient is φ = 1311439554880.

The previous prime is 1311446355533. The next prime is 1311446355617. The reversal of 1311446355613 is 3165536441131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1242774580804 + 68671774809 = 1114798^2 + 262053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311446355613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1311446355613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311446355617) 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, 3102406 + ... + 3499687.

It is an arithmetic number, because the mean of its divisors is an integer number (327863289087).

Almost surely, 2^{1311446355613} is an apocalyptic number.

It is an amenable number.

1311446355613 is a deficient number, since it is larger than the sum of its proper divisors (6800735).

1311446355613 is an equidigital number, since it uses as much as digits as its factorization.

1311446355613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6800734.

The product of its digits is 388800, while the sum is 43.

The spelling of 1311446355613 in words is "one trillion, three hundred eleven billion, four hundred forty-six million, three hundred fifty-five thousand, six hundred thirteen".