191007 has 12 divisors (see below), whose sum is σ = 290680. Its totient is φ = 120528.

The previous prime is 190997. The next prime is 191021. The reversal of 191007 is 700191.

191007 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

191007 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 191007 - 2¹⁰ = 189983 is a prime.

It is a Duffinian number.

191007 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191027) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 388 + ... + 729.

2¹⁹¹⁰⁰⁷ is an apocalyptic number.

191007 is a deficient number, since it is larger than the sum of its proper divisors (99673).

191007 is a wasteful number, since it uses less digits than its factorization.

191007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 63, while the sum is 18.

The square root of 191007 is about 437.0434760982. The cubic root of 191007 is about 57.5903557348.

Adding to 191007 its reverse (700191), we get a palindrome (891198).

The spelling of 191007 in words is "one hundred ninety-one thousand, seven".