13203217 has 2 divisors, whose sum is σ = 13203218. Its totient is φ = 13203216.

The previous prime is 13203209. The next prime is 13203251. The reversal of 13203217 is 71230231.

13203217 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12327121 + 876096 = 3511^2 + 936^2 .

It is a cyclic number.

It is not a de Polignac number, because 13203217 - 2³ = 13203209 is a prime.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 13203194 and 13203203.

It is not a weakly prime, because it can be changed into another prime (13203277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6601608 + 6601609.

It is an arithmetic number, because the mean of its divisors is an integer number (6601609).

Almost surely, 2^13203217 is an apocalyptic number.

It is an amenable number.

13203217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13203217 is an equidigital number, since it uses as much as digits as its factorization.

13203217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 13203217 is about 3633.6231230000. The cubic root of 13203217 is about 236.3523476185.

Adding to 13203217 its reverse (71230231), we get a palindrome (84433448).

The spelling of 13203217 in words is "thirteen million, two hundred three thousand, two hundred seventeen".