1116043271 has 4 divisors (see below), whose sum is σ = 1275478032. Its totient is φ = 956608512.

The previous prime is 1116043231. The next prime is 1116043273. The reversal of 1116043271 is 1723406111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1723406111 = 7 ⋅246200873.

It is a cyclic number.

It is not a de Polignac number, because 1116043271 - 2¹⁰ = 1116042247 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 1116043271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116043273) 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, 79717370 + ... + 79717383.

It is an arithmetic number, because the mean of its divisors is an integer number (318869508).

Almost surely, 2^1116043271 is an apocalyptic number.

1116043271 is a deficient number, since it is larger than the sum of its proper divisors (159434761).

1116043271 is an equidigital number, since it uses as much as digits as its factorization.

1116043271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159434760.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1116043271 is about 33407.2338124545. The cubic root of 1116043271 is about 1037.2744433652.

Adding to 1116043271 its reverse (1723406111), we get a palindrome (2839449382).

The spelling of 1116043271 in words is "one billion, one hundred sixteen million, forty-three thousand, two hundred seventy-one".