16317317 has 4 divisors (see below), whose sum is σ = 16584876. Its totient is φ = 16049760.

The previous prime is 16317311. The next prime is 16317337. The reversal of 16317317 is 71371361.

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 5354596 + 10962721 = 2314^2 + 3311^2 .

It is a cyclic number.

It is not a de Polignac number, because 16317317 - 2⁸ = 16317061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16317317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16317311) 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, 133688 + ... + 133809.

It is an arithmetic number, because the mean of its divisors is an integer number (4146219).

Almost surely, 2^16317317 is an apocalyptic number.

It is an amenable number.

16317317 is a deficient number, since it is larger than the sum of its proper divisors (267559).

16317317 is an equidigital number, since it uses as much as digits as its factorization.

16317317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267558.

The product of its digits is 2646, while the sum is 29.

The square root of 16317317 is about 4039.4698909634. The cubic root of 16317317 is about 253.6391273091.

Adding to 16317317 its reverse (71371361), we get a palindrome (87688678).

The spelling of 16317317 in words is "sixteen million, three hundred seventeen thousand, three hundred seventeen".