12308091 has 4 divisors (see below), whose sum is σ = 16410792. Its totient is φ = 8205392.

The previous prime is 12308089. The next prime is 12308113. The reversal of 12308091 is 19080321.

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 12308091 - 2¹ = 12308089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12308011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2051346 + ... + 2051351.

It is an arithmetic number, because the mean of its divisors is an integer number (4102698).

Almost surely, 2^12308091 is an apocalyptic number.

12308091 is a deficient number, since it is larger than the sum of its proper divisors (4102701).

12308091 is an equidigital number, since it uses as much as digits as its factorization.

12308091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4102700.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 12308091 is about 3508.2888991644. The cubic root of 12308091 is about 230.8856276828.

The spelling of 12308091 in words is "twelve million, three hundred eight thousand, ninety-one".