1311838104111 has 4 divisors (see below), whose sum is σ = 1749117472152. Its totient is φ = 874558736072.

The previous prime is 1311838104091. The next prime is 1311838104167. The reversal of 1311838104111 is 1114018381131.

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 1311838104111 - 2¹⁴ = 1311838087727 is a prime.

It is a super-2 number, since 2×1311838104111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311838104211) 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 3 ways as a sum of consecutive naturals, for example, 218639684016 + ... + 218639684021.

It is an arithmetic number, because the mean of its divisors is an integer number (437279368038).

Almost surely, 2^{1311838104111} is an apocalyptic number.

1311838104111 is a deficient number, since it is larger than the sum of its proper divisors (437279368041).

1311838104111 is an equidigital number, since it uses as much as digits as its factorization.

1311838104111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437279368040.

The product of its (nonzero) digits is 2304, while the sum is 33.

The spelling of 1311838104111 in words is "one trillion, three hundred eleven billion, eight hundred thirty-eight million, one hundred four thousand, one hundred eleven".