117143591 has 4 divisors (see below), whose sum is σ = 120309672. Its totient is φ = 113977512.

The previous prime is 117143573. The next prime is 117143603. The reversal of 117143591 is 195341711.

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 117143591 - 2⁶ = 117143527 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 (117143291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1582985 + ... + 1583058.

It is an arithmetic number, because the mean of its divisors is an integer number (30077418).

Almost surely, 2^117143591 is an apocalyptic number.

117143591 is a deficient number, since it is larger than the sum of its proper divisors (3166081).

117143591 is an equidigital number, since it uses as much as digits as its factorization.

117143591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166080.

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

The square root of 117143591 is about 10823.2892874579. The cubic root of 117143591 is about 489.2973282493.

The spelling of 117143591 in words is "one hundred seventeen million, one hundred forty-three thousand, five hundred ninety-one".