117591143 has 12 divisors (see below), whose sum is σ = 125110440. Its totient is φ = 110438496.

The previous prime is 117591137. The next prime is 117591151. The reversal of 117591143 is 341195711.

It is not a de Polignac number, because 117591143 - 2¹⁰ = 117590119 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 (117591113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29228 + ... + 33006.

It is an arithmetic number, because the mean of its divisors is an integer number (10425870).

Almost surely, 2^117591143 is an apocalyptic number.

117591143 is a deficient number, since it is larger than the sum of its proper divisors (7519297).

117591143 is an equidigital number, since it uses as much as digits as its factorization.

117591143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3874 (or 3845 counting only the distinct ones).

The product of its digits is 3780, while the sum is 32.

The square root of 117591143 is about 10843.9449924831. The cubic root of 117591143 is about 489.9196633530.

The spelling of 117591143 in words is "one hundred seventeen million, five hundred ninety-one thousand, one hundred forty-three".