12308871 has 4 divisors (see below), whose sum is σ = 16411832. Its totient is φ = 8205912.

The previous prime is 12308861. The next prime is 12308873. The reversal of 12308871 is 17880321.

It is a happy number.

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

It is not a de Polignac number, because 12308871 - 2⁵ = 12308839 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 (12308873) 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, 2051476 + ... + 2051481.

It is an arithmetic number, because the mean of its divisors is an integer number (4102958).

Almost surely, 2^12308871 is an apocalyptic number.

12308871 is a deficient number, since it is larger than the sum of its proper divisors (4102961).

12308871 is an equidigital number, since it uses as much as digits as its factorization.

12308871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102960.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 12308871 is about 3508.4000627066. The cubic root of 12308871 is about 230.8905048807.

It can be divided in two parts, 1230 and 8871, that added together give a palindrome (10101).

The spelling of 12308871 in words is "twelve million, three hundred eight thousand, eight hundred seventy-one".