10191 has 8 divisors (see below), whose sum is σ = 14080. Its totient is φ = 6552.

The previous prime is 10181. The next prime is 10193. The reversal of 10191 is 19101.

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

It is not a de Polignac number, because 10191 - 2⁵ = 10159 is a prime.

It is a Duffinian number.

10191 is a lucky number.

It is a plaindrome in base 14 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10193) 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, 90 + ... + 168.

It is an arithmetic number, because the mean of its divisors is an integer number (1760).

2¹⁰¹⁹¹ is an apocalyptic number.

10191 is a deficient number, since it is larger than the sum of its proper divisors (3889).

10191 is an equidigital number, since it uses as much as digits as its factorization.

10191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 10191 is about 100.9504829112. The cubic root of 10191 is about 21.6806484376.

Adding to 10191 its reverse (19101), we get a palindrome (29292).

The spelling of 10191 in words is "ten thousand, one hundred ninety-one".