223216305 has 32 divisors (see below), whose sum is σ = 385674240. Its totient is φ = 109589760.

The previous prime is 223216289. The next prime is 223216321. The reversal of 223216305 is 503612322.

It is an interprime number because it is at equal distance from previous prime (223216289) and next prime (223216321).

It is not a de Polignac number, because 223216305 - 2⁴ = 223216289 is a prime.

It is a super-3 number, since 3×223216305³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80736 + ... + 83454.

It is an arithmetic number, because the mean of its divisors is an integer number (12052320).

Almost surely, 2^223216305 is an apocalyptic number.

It is an amenable number.

223216305 is a deficient number, since it is larger than the sum of its proper divisors (162457935).

223216305 is a wasteful number, since it uses less digits than its factorization.

223216305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 223216305 is about 14940.4251947527. The cubic root of 223216305 is about 606.6087049979.

Adding to 223216305 its reverse (503612322), we get a palindrome (726828627).

The spelling of 223216305 in words is "two hundred twenty-three million, two hundred sixteen thousand, three hundred five".