216355223 has 16 divisors (see below), whose sum is σ = 261354240. Its totient is φ = 174960000.

The previous prime is 216355219. The next prime is 216355291. The reversal of 216355223 is 322553612.

It is a cyclic number.

It is not a de Polignac number, because 216355223 - 2² = 216355219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216355213) 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, 30143 + ... + 36623.

It is an arithmetic number, because the mean of its divisors is an integer number (16334640).

Almost surely, 2^216355223 is an apocalyptic number.

216355223 is a deficient number, since it is larger than the sum of its proper divisors (44999017).

216355223 is a wasteful number, since it uses less digits than its factorization.

216355223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6758.

The product of its digits is 10800, while the sum is 29.

The square root of 216355223 is about 14709.0184240826. The cubic root of 216355223 is about 600.3287300466.

The spelling of 216355223 in words is "two hundred sixteen million, three hundred fifty-five thousand, two hundred twenty-three".