216328343 has 16 divisors (see below), whose sum is σ = 271689984. Its totient is φ = 167328960.

The previous prime is 216328339. The next prime is 216328361. The reversal of 216328343 is 343823612.

It is a cyclic number.

It is not a de Polignac number, because 216328343 - 2² = 216328339 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 (216328303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296 + ... + 20802.

It is an arithmetic number, because the mean of its divisors is an integer number (16980624).

Almost surely, 2^216328343 is an apocalyptic number.

216328343 is a deficient number, since it is larger than the sum of its proper divisors (55361641).

216328343 is a wasteful number, since it uses less digits than its factorization.

216328343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20662.

The product of its digits is 20736, while the sum is 32.

The square root of 216328343 is about 14708.1046705549. The cubic root of 216328343 is about 600.3038673780.

The spelling of 216328343 in words is "two hundred sixteen million, three hundred twenty-eight thousand, three hundred forty-three".