118591271 has 4 divisors (see below), whose sum is σ = 119765544. Its totient is φ = 117417000.

The previous prime is 118591267. The next prime is 118591309. The reversal of 118591271 is 172195811.

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 118591271 - 2² = 118591267 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 (118591211) 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, 586985 + ... + 587186.

It is an arithmetic number, because the mean of its divisors is an integer number (29941386).

Almost surely, 2^118591271 is an apocalyptic number.

118591271 is a deficient number, since it is larger than the sum of its proper divisors (1174273).

118591271 is a wasteful number, since it uses less digits than its factorization.

118591271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174272.

The product of its digits is 5040, while the sum is 35.

The square root of 118591271 is about 10889.9619374909. The cubic root of 118591271 is about 491.3046876726.

The spelling of 118591271 in words is "one hundred eighteen million, five hundred ninety-one thousand, two hundred seventy-one".