13247 has 4 divisors (see below), whose sum is σ = 14280. Its totient is φ = 12216.

The previous prime is 13241. The next prime is 13249. The reversal of 13247 is 74231.

It is a happy number.

13247 is digitally balanced in base 3, 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 13247 - 2⁶ = 13183 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12 and base 16.

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497 + ... + 522.

It is an arithmetic number, because the mean of its divisors is an integer number (3570).

2¹³²⁴⁷ is an apocalyptic number.

13247 is a deficient number, since it is larger than the sum of its proper divisors (1033).

13247 is a wasteful number, since it uses less digits than its factorization.

13247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032.

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

The square root of 13247 is about 115.0956124272. The cubic root of 13247 is about 23.6613314254.

Adding to 13247 its reverse (74231), we get a palindrome (87478).

It can be divided in two parts, 1324 and 7, that added together give a palindrome (1331).

The spelling of 13247 in words is "thirteen thousand, two hundred forty-seven".