216723443 has 8 divisors (see below), whose sum is σ = 229291920. Its totient is φ = 204271200.

The previous prime is 216723431. The next prime is 216723469. The reversal of 216723443 is 344327612.

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

It is a cyclic number.

It is not a de Polignac number, because 216723443 - 2⁸ = 216723187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216723743) 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, 25208 + ... + 32693.

It is an arithmetic number, because the mean of its divisors is an integer number (28661490).

Almost surely, 2^216723443 is an apocalyptic number.

216723443 is a deficient number, since it is larger than the sum of its proper divisors (12568477).

216723443 is a wasteful number, since it uses less digits than its factorization.

216723443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58117.

The product of its digits is 24192, while the sum is 32.

The square root of 216723443 is about 14721.5299137012. The cubic root of 216723443 is about 600.6691081760.

The spelling of 216723443 in words is "two hundred sixteen million, seven hundred twenty-three thousand, four hundred forty-three".