12231347 has 6 divisors (see below), whose sum is σ = 12993468. Its totient is φ = 11511584.

The previous prime is 12231311. The next prime is 12231367. The reversal of 12231347 is 74313221.

It is not a de Polignac number, because 12231347 - 2⁶ = 12231283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12231367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20873 + ... + 21450.

It is an arithmetic number, because the mean of its divisors is an integer number (2165578).

Almost surely, 2^12231347 is an apocalyptic number.

12231347 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12231347 is a deficient number, since it is larger than the sum of its proper divisors (762121).

12231347 is an equidigital number, since it uses as much as digits as its factorization.

12231347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42357 (or 42340 counting only the distinct ones).

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

The square root of 12231347 is about 3497.3342705552. The cubic root of 12231347 is about 230.4047504466.

Adding to 12231347 its reverse (74313221), we get a palindrome (86544568).

The spelling of 12231347 in words is "twelve million, two hundred thirty-one thousand, three hundred forty-seven".