1311116265143 has 4 divisors (see below), whose sum is σ = 1311349441008. Its totient is φ = 1310883089280.

The previous prime is 1311116265133. The next prime is 1311116265157. The reversal of 1311116265143 is 3415626111131.

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 1311116265143 - 2⁶ = 1311116265079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311116265133) 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, 116579498 + ... + 116590743.

It is an arithmetic number, because the mean of its divisors is an integer number (327837360252).

Almost surely, 2^{1311116265143} is an apocalyptic number.

1311116265143 is a deficient number, since it is larger than the sum of its proper divisors (233175865).

1311116265143 is an equidigital number, since it uses as much as digits as its factorization.

1311116265143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233175864.

The product of its digits is 12960, while the sum is 35.

The spelling of 1311116265143 in words is "one trillion, three hundred eleven billion, one hundred sixteen million, two hundred sixty-five thousand, one hundred forty-three".