1311436411111 has 4 divisors (see below), whose sum is σ = 1311440135800. Its totient is φ = 1311432686424.

The previous prime is 1311436411093. The next prime is 1311436411147. The reversal of 1311436411111 is 1111146341131.

It is a happy number.

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 1311436411111 - 2²⁹ = 1310899540199 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 1311436411111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311466411111) 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, 1271781 + ... + 2059198.

It is an arithmetic number, because the mean of its divisors is an integer number (327860033950).

Almost surely, 2^{1311436411111} is an apocalyptic number.

1311436411111 is a deficient number, since it is larger than the sum of its proper divisors (3724689).

1311436411111 is an equidigital number, since it uses as much as digits as its factorization.

1311436411111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3724688.

The product of its digits is 864, while the sum is 28.

The spelling of 1311436411111 in words is "one trillion, three hundred eleven billion, four hundred thirty-six million, four hundred eleven thousand, one hundred eleven".