13319217 has 6 divisors (see below), whose sum is σ = 19238882. Its totient is φ = 8879472.

The previous prime is 13319213. The next prime is 13319221. The reversal of 13319217 is 71291331.

13319217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13319213) and next prime (13319221).

It can be written as a sum of positive squares in only one way, i.e., 12787776 + 531441 = 3576^2 + 729^2 .

It is not a de Polignac number, because 13319217 - 2² = 13319213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13319213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 739948 + ... + 739965.

Almost surely, 2^13319217 is an apocalyptic number.

It is an amenable number.

13319217 is a deficient number, since it is larger than the sum of its proper divisors (5919665).

13319217 is a wasteful number, since it uses less digits than its factorization.

13319217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479919 (or 1479916 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 13319217 is about 3649.5502462632. The cubic root of 13319217 is about 237.0425069300.

The spelling of 13319217 in words is "thirteen million, three hundred nineteen thousand, two hundred seventeen".