12331427 has 4 divisors (see below), whose sum is σ = 12867600. Its totient is φ = 11795256.

The previous prime is 12331391. The next prime is 12331441. The reversal of 12331427 is 72413321.

12331427 is digitally balanced in base 2, 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 12331427 - 2²⁰ = 11282851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 536149 = 12331427 / (1 + 2 + 3 + 3 + 1 + 4 + 2 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12331127) 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, 268052 + ... + 268097.

It is an arithmetic number, because the mean of its divisors is an integer number (3216900).

Almost surely, 2^12331427 is an apocalyptic number.

12331427 is a deficient number, since it is larger than the sum of its proper divisors (536173).

12331427 is an equidigital number, since it uses as much as digits as its factorization.

12331427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536172.

The product of its digits is 1008, while the sum is 23.

The square root of 12331427 is about 3511.6131620667. The cubic root of 12331427 is about 231.0314543976.

Adding to 12331427 its reverse (72413321), we get a palindrome (84744748).

The spelling of 12331427 in words is "twelve million, three hundred thirty-one thousand, four hundred twenty-seven".