12371191 has 4 divisors (see below), whose sum is σ = 14138512. Its totient is φ = 10603872.

The previous prime is 12371153. The next prime is 12371213. The reversal of 12371191 is 19117321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12371191 - 2¹¹ = 12369143 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 (12374191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 883650 + ... + 883663.

It is an arithmetic number, because the mean of its divisors is an integer number (3534628).

Almost surely, 2^12371191 is an apocalyptic number.

12371191 is a deficient number, since it is larger than the sum of its proper divisors (1767321).

12371191 is an equidigital number, since it uses as much as digits as its factorization.

12371191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767320.

The product of its digits is 378, while the sum is 25.

The square root of 12371191 is about 3517.2703905159. The cubic root of 12371191 is about 231.2795164661.

The spelling of 12371191 in words is "twelve million, three hundred seventy-one thousand, one hundred ninety-one".