13208317 has 4 divisors (see below), whose sum is σ = 13224096. Its totient is φ = 13192540.

The previous prime is 13208309. The next prime is 13208329. The reversal of 13208317 is 71380231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71380231 = 13 ⋅5490787.

It is a cyclic number.

It is not a de Polignac number, because 13208317 - 2³ = 13208309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13208291 and 13208300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13208347) 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, 6559 + ... + 8332.

It is an arithmetic number, because the mean of its divisors is an integer number (3306024).

Almost surely, 2^13208317 is an apocalyptic number.

It is an amenable number.

13208317 is a deficient number, since it is larger than the sum of its proper divisors (15779).

13208317 is an equidigital number, since it uses as much as digits as its factorization.

13208317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15778.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 13208317 is about 3634.3248341336. The cubic root of 13208317 is about 236.3827756019.

Adding to 13208317 its reverse (71380231), we get a palindrome (84588548).

The spelling of 13208317 in words is "thirteen million, two hundred eight thousand, three hundred seventeen".