216333743 has 4 divisors (see below), whose sum is σ = 217262448. Its totient is φ = 215405040.

The previous prime is 216333727. The next prime is 216333769. The reversal of 216333743 is 347333612.

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

It is a cyclic number.

It is not a de Polignac number, because 216333743 - 2⁴ = 216333727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216333713) 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, 464003 + ... + 464468.

It is an arithmetic number, because the mean of its divisors is an integer number (54315612).

Almost surely, 2^216333743 is an apocalyptic number.

216333743 is a deficient number, since it is larger than the sum of its proper divisors (928705).

216333743 is an equidigital number, since it uses as much as digits as its factorization.

216333743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928704.

The product of its digits is 27216, while the sum is 32.

The square root of 216333743 is about 14708.2882416684. The cubic root of 216333743 is about 600.3088622758.

The spelling of 216333743 in words is "two hundred sixteen million, three hundred thirty-three thousand, seven hundred forty-three".