12347 has 2 divisors, whose sum is σ = 12348. Its totient is φ = 12346.

The previous prime is 12343. The next prime is 12373. The reversal of 12347 is 74321.

It is a happy number.

12347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

12347 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 12347 - 2² = 12343 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 1 + 2¹³ + 3² + 4⁶ + 7² .

It is an alternating number because its digits alternate between odd and even.

It is equal to p₁₄₇₅ and since 12347 and 1475 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 10 and base 14.

It is not a weakly prime, because it can be changed into another prime (12343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6173 + 6174.

It is an arithmetic number, because the mean of its divisors is an integer number (6174).

2¹²³⁴⁷ is an apocalyptic number.

12347 is a deficient number, since it is larger than the sum of its proper divisors (1).

12347 is an equidigital number, since it uses as much as digits as its factorization.

12347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 17.

The square root of 12347 is about 111.1170553966. The cubic root of 12347 is about 23.1128667785.

Adding to 12347 its reverse (74321), we get a palindrome (86668).

The spelling of 12347 in words is "twelve thousand, three hundred forty-seven", and thus it is an iban number.