216343443 has 8 divisors (see below), whose sum is σ = 303640000. Its totient is φ = 136637928.

The previous prime is 216343441. The next prime is 216343453. The reversal of 216343443 is 344343612.

216343443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216343443 - 2¹ = 216343441 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 216343443.

It is not an unprimeable number, because it can be changed into a prime (216343441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1897693 + ... + 1897806.

It is an arithmetic number, because the mean of its divisors is an integer number (37955000).

Almost surely, 2^216343443 is an apocalyptic number.

216343443 is a deficient number, since it is larger than the sum of its proper divisors (87296557).

216343443 is a wasteful number, since it uses less digits than its factorization.

216343443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3795521.

The product of its digits is 20736, while the sum is 30.

The square root of 216343443 is about 14708.6179840256. The cubic root of 216343443 is about 600.3178343836.

The spelling of 216343443 in words is "two hundred sixteen million, three hundred forty-three thousand, four hundred forty-three".