1311132112443 has 96 divisors (see below), whose sum is σ = 2171947115520. Its totient is φ = 786864637440.

The previous prime is 1311132112439. The next prime is 1311132112447. The reversal of 1311132112443 is 3442112311131.

1311132112443 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 1 + 3 + 211 + 2 + 443 = 666.

It is an interprime number because it is at equal distance from previous prime (1311132112439) and next prime (1311132112447).

It is not a de Polignac number, because 1311132112443 - 2² = 1311132112439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1311132112447) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8945278 + ... + 9090668.

It is an arithmetic number, because the mean of its divisors is an integer number (22624449120).

Almost surely, 2^{1311132112443} is an apocalyptic number.

1311132112443 is a deficient number, since it is larger than the sum of its proper divisors (860815003077).

1311132112443 is a wasteful number, since it uses less digits than its factorization.

1311132112443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145519 (or 145507 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

Adding to 1311132112443 its reverse (3442112311131), we get a palindrome (4753244423574).

The spelling of 1311132112443 in words is "one trillion, three hundred eleven billion, one hundred thirty-two million, one hundred twelve thousand, four hundred forty-three".