12341891 has 4 divisors (see below), whose sum is σ = 12511032. Its totient is φ = 12172752.

The previous prime is 12341873. The next prime is 12341899. The reversal of 12341891 is 19814321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12341891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12341899) 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 3 ways as a sum of consecutive naturals, for example, 84461 + ... + 84606.

It is an arithmetic number, because the mean of its divisors is an integer number (3127758).

Almost surely, 2^12341891 is an apocalyptic number.

12341891 is a deficient number, since it is larger than the sum of its proper divisors (169141).

12341891 is an equidigital number, since it uses as much as digits as its factorization.

12341891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169140.

The product of its digits is 1728, while the sum is 29.

The square root of 12341891 is about 3513.1027596699. The cubic root of 12341891 is about 231.0967842159.

It can be divided in two parts, 1234 and 1891, that added together give a 5-th power (3125 = 5⁵).

The spelling of 12341891 in words is "twelve million, three hundred forty-one thousand, eight hundred ninety-one".