117236191 has 4 divisors (see below), whose sum is σ = 117442800. Its totient is φ = 117029584.

The previous prime is 117236177. The next prime is 117236201. The reversal of 117236191 is 191632711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 191632711 = 23 ⋅8331857.

It is a cyclic number.

It is not a de Polignac number, because 117236191 - 2¹⁷ = 117105119 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 (117236111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102451 + ... + 103588.

It is an arithmetic number, because the mean of its divisors is an integer number (29360700).

Almost surely, 2^117236191 is an apocalyptic number.

117236191 is a deficient number, since it is larger than the sum of its proper divisors (206609).

117236191 is an equidigital number, since it uses as much as digits as its factorization.

117236191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206608.

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

The square root of 117236191 is about 10827.5662547038. The cubic root of 117236191 is about 489.4262213420.

The spelling of 117236191 in words is "one hundred seventeen million, two hundred thirty-six thousand, one hundred ninety-one".