223656213 has 8 divisors (see below), whose sum is σ = 325318176. Its totient is φ = 135549200.

The previous prime is 223656193. The next prime is 223656247. The reversal of 223656213 is 312656322.

223656213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 223656213 - 2¹⁰ = 223655189 is a prime.

It is a super-2 number, since 2×223656213² = 100044203227002738, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223656113) 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, 3388698 + ... + 3388763.

It is an arithmetic number, because the mean of its divisors is an integer number (40664772).

Almost surely, 2^223656213 is an apocalyptic number.

It is an amenable number.

223656213 is a deficient number, since it is larger than the sum of its proper divisors (101661963).

223656213 is a wasteful number, since it uses less digits than its factorization.

223656213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6777475.

The product of its digits is 12960, while the sum is 30.

The square root of 223656213 is about 14955.1400194047. The cubic root of 223656213 is about 607.0069389181.

The spelling of 223656213 in words is "two hundred twenty-three million, six hundred fifty-six thousand, two hundred thirteen".