16347 has 4 divisors (see below), whose sum is σ = 21800. Its totient is φ = 10896.

The previous prime is 16339. The next prime is 16349. The reversal of 16347 is 74361.

16347 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16347 - 2³ = 16339 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16349) 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, 2722 + ... + 2727.

It is an arithmetic number, because the mean of its divisors is an integer number (5450).

16347 is a Friedman number, since it can be written as 4^7-31-6, using all its digits and the basic arithmetic operations.

2¹⁶³⁴⁷ is an apocalyptic number.

16347 is a deficient number, since it is larger than the sum of its proper divisors (5453).

16347 is an equidigital number, since it uses as much as digits as its factorization.

16347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5452.

The product of its digits is 504, while the sum is 21.

The square root of 16347 is about 127.8553870590. The cubic root of 16347 is about 25.3792833330.

It can be divided in two parts, 163 and 47, that added together give a triangular number (210 = T₂₀).

The spelling of 16347 in words is "sixteen thousand, three hundred forty-seven".