191318 has 12 divisors (see below), whose sum is σ = 305772. Its totient is φ = 89760.

The previous prime is 191299. The next prime is 191339. The reversal of 191318 is 813191.

191318 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 191293 and 191302.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 191318.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 413 + ... + 743.

It is an arithmetic number, because the mean of its divisors is an integer number (25481).

2¹⁹¹³¹⁸ is an apocalyptic number.

191318 is a deficient number, since it is larger than the sum of its proper divisors (114454).

191318 is a wasteful number, since it uses less digits than its factorization.

191318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367 (or 350 counting only the distinct ones).

The product of its digits is 216, while the sum is 23.

The square root of 191318 is about 437.3991312291. The cubic root of 191318 is about 57.6215952333.

It can be divided in two parts, 1 and 91318, that added together give a palindrome (91319).

The spelling of 191318 in words is "one hundred ninety-one thousand, three hundred eighteen".