12311427 has 4 divisors (see below), whose sum is σ = 16415240. Its totient is φ = 8207616.

The previous prime is 12311419. The next prime is 12311443. The reversal of 12311427 is 72411321.

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

It is not a de Polignac number, because 12311427 - 2³ = 12311419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12311027) 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, 2051902 + ... + 2051907.

It is an arithmetic number, because the mean of its divisors is an integer number (4103810).

Almost surely, 2^12311427 is an apocalyptic number.

12311427 is a deficient number, since it is larger than the sum of its proper divisors (4103813).

12311427 is an equidigital number, since it uses as much as digits as its factorization.

12311427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103812.

The product of its digits is 336, while the sum is 21.

The square root of 12311427 is about 3508.7643124040. The cubic root of 12311427 is about 230.9064856392.

Adding to 12311427 its reverse (72411321), we get a palindrome (84722748).

The spelling of 12311427 in words is "twelve million, three hundred eleven thousand, four hundred twenty-seven".