117316291 has 4 divisors (see below), whose sum is σ = 117385192. Its totient is φ = 117247392.

The previous prime is 117316289. The next prime is 117316301. The reversal of 117316291 is 192613711.

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 117316291 - 2¹ = 117316289 is a prime.

It is a super-2 number, since 2×117316291² = 27526224267993362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117316231) 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, 31830 + ... + 35323.

It is an arithmetic number, because the mean of its divisors is an integer number (29346298).

Almost surely, 2^117316291 is an apocalyptic number.

117316291 is a deficient number, since it is larger than the sum of its proper divisors (68901).

117316291 is an equidigital number, since it uses as much as digits as its factorization.

117316291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68900.

The product of its digits is 2268, while the sum is 31.

The square root of 117316291 is about 10831.2645152817. The cubic root of 117316291 is about 489.5376605232.

The spelling of 117316291 in words is "one hundred seventeen million, three hundred sixteen thousand, two hundred ninety-one".