1311605336411 has 4 divisors (see below), whose sum is σ = 1388758591512. Its totient is φ = 1234452081312.

The previous prime is 1311605336389. The next prime is 1311605336507. The reversal of 1311605336411 is 1146335061131.

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

It is a cyclic number.

It is not a de Polignac number, because 1311605336411 - 2⁶ = 1311605336347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311605336611) 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, 38576627525 + ... + 38576627558.

It is an arithmetic number, because the mean of its divisors is an integer number (347189647878).

Almost surely, 2^{1311605336411} is an apocalyptic number.

1311605336411 is a deficient number, since it is larger than the sum of its proper divisors (77153255101).

1311605336411 is an equidigital number, since it uses as much as digits as its factorization.

1311605336411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77153255100.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 1311605336411 in words is "one trillion, three hundred eleven billion, six hundred five million, three hundred thirty-six thousand, four hundred eleven".