191197223 has 8 divisors (see below), whose sum is σ = 221144448. Its totient is φ = 161908344.

The previous prime is 191197217. The next prime is 191197267. The reversal of 191197223 is 322791191.

191197223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 191197223 - 2⁶ = 191197159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191197273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163961 + ... + 165122.

It is an arithmetic number, because the mean of its divisors is an integer number (27643056).

Almost surely, 2^191197223 is an apocalyptic number.

191197223 is a deficient number, since it is larger than the sum of its proper divisors (29947225).

191197223 is an equidigital number, since it uses as much as digits as its factorization.

191197223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329173.

The product of its digits is 6804, while the sum is 35.

The square root of 191197223 is about 13827.4083978163. The cubic root of 191197223 is about 576.0946738270.

The spelling of 191197223 in words is "one hundred ninety-one million, one hundred ninety-seven thousand, two hundred twenty-three".