12711091 has 4 divisors (see below), whose sum is σ = 13054672. Its totient is φ = 12367512.

The previous prime is 12711089. The next prime is 12711109. The reversal of 12711091 is 19011721.

12711091 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 12711091 - 2¹ = 12711089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12711001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171735 + ... + 171808.

It is an arithmetic number, because the mean of its divisors is an integer number (3263668).

Almost surely, 2^12711091 is an apocalyptic number.

12711091 is a deficient number, since it is larger than the sum of its proper divisors (343581).

12711091 is an equidigital number, since it uses as much as digits as its factorization.

12711091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343580.

The product of its (nonzero) digits is 126, while the sum is 22.

The square root of 12711091 is about 3565.2617014744. The cubic root of 12711091 is about 233.3785529140.

The spelling of 12711091 in words is "twelve million, seven hundred eleven thousand, ninety-one".