16227317 has 4 divisors (see below), whose sum is σ = 16239756. Its totient is φ = 16214880.

The previous prime is 16227313. The next prime is 16227319. The reversal of 16227317 is 71372261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71372261 = 31 ⋅2302331.

It can be written as a sum of positive squares in 2 ways, for example, as 8532241 + 7695076 = 2921^2 + 2774^2 .

It is a cyclic number.

It is not a de Polignac number, because 16227317 - 2² = 16227313 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 16227317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16227313) 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, 3998 + ... + 6959.

It is an arithmetic number, because the mean of its divisors is an integer number (4059939).

Almost surely, 2^16227317 is an apocalyptic number.

It is an amenable number.

16227317 is a deficient number, since it is larger than the sum of its proper divisors (12439).

16227317 is a wasteful number, since it uses less digits than its factorization.

16227317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12438.

The product of its digits is 3528, while the sum is 29.

The square root of 16227317 is about 4028.3144117608. The cubic root of 16227317 is about 253.1719422567.

Adding to 16227317 its reverse (71372261), we get a palindrome (87599578).

The spelling of 16227317 in words is "sixteen million, two hundred twenty-seven thousand, three hundred seventeen".