16317407 has 4 divisors (see below), whose sum is σ = 16758456. Its totient is φ = 15876360.

The previous prime is 16317391. The next prime is 16317421. The reversal of 16317407 is 70471361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70471361 = 19 ⋅3709019.

It is a cyclic number.

It is not a de Polignac number, because 16317407 - 2⁴ = 16317391 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 16317407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16317107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220469 + ... + 220542.

It is an arithmetic number, because the mean of its divisors is an integer number (4189614).

Almost surely, 2^16317407 is an apocalyptic number.

16317407 is a deficient number, since it is larger than the sum of its proper divisors (441049).

16317407 is an equidigital number, since it uses as much as digits as its factorization.

16317407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441048.

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

The square root of 16317407 is about 4039.4810310237. The cubic root of 16317407 is about 253.6395936333.

Adding to 16317407 its reverse (70471361), we get a palindrome (86788768).

The spelling of 16317407 in words is "sixteen million, three hundred seventeen thousand, four hundred seven".