13803217 has 4 divisors (see below), whose sum is σ = 14279220. Its totient is φ = 13327216.

The previous prime is 13803173. The next prime is 13803221. The reversal of 13803217 is 71230831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5456896 + 8346321 = 2336^2 + 2889^2 .

It is a cyclic number.

It is not a de Polignac number, because 13803217 - 2⁷ = 13803089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13803191 and 13803200.

It is not an unprimeable number, because it can be changed into a prime (13803617) 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 3 ways as a sum of consecutive naturals, for example, 237958 + ... + 238015.

It is an arithmetic number, because the mean of its divisors is an integer number (3569805).

Almost surely, 2^13803217 is an apocalyptic number.

It is an amenable number.

13803217 is a deficient number, since it is larger than the sum of its proper divisors (476003).

13803217 is an equidigital number, since it uses as much as digits as its factorization.

13803217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476002.

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

The square root of 13803217 is about 3715.2680926146. The cubic root of 13803217 is about 239.8796676866.

The spelling of 13803217 in words is "thirteen million, eight hundred three thousand, two hundred seventeen".