13216307 has 6 divisors (see below), whose sum is σ = 14311332. Its totient is φ = 12199512.

The previous prime is 13216303. The next prime is 13216331. The reversal of 13216307 is 70361231.

It is a happy number.

13216307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13216307 - 2² = 13216303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13216303) 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, 38933 + ... + 39270.

It is an arithmetic number, because the mean of its divisors is an integer number (2385222).

Almost surely, 2^13216307 is an apocalyptic number.

13216307 is a deficient number, since it is larger than the sum of its proper divisors (1095025).

13216307 is an equidigital number, since it uses as much as digits as its factorization.

13216307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78229 (or 78216 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 13216307 is about 3635.4239092574. The cubic root of 13216307 is about 236.4304303653.

Adding to 13216307 its reverse (70361231), we get a palindrome (83577538).

The spelling of 13216307 in words is "thirteen million, two hundred sixteen thousand, three hundred seven".