13003247 has 2 divisors, whose sum is σ = 13003248. Its totient is φ = 13003246.

The previous prime is 13003231. The next prime is 13003259. The reversal of 13003247 is 74230031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13003247 - 2⁴ = 13003231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13003547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6501623 + 6501624.

It is an arithmetic number, because the mean of its divisors is an integer number (6501624).

Almost surely, 2^13003247 is an apocalyptic number.

13003247 is a deficient number, since it is larger than the sum of its proper divisors (1).

13003247 is an equidigital number, since it uses as much as digits as its factorization.

13003247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 13003247 is about 3606.0015252354. The cubic root of 13003247 is about 235.1530435110.

Adding to 13003247 its reverse (74230031), we get a palindrome (87233278).

The spelling of 13003247 in words is "thirteen million, three thousand, two hundred forty-seven".