223213213 has 8 divisors (see below), whose sum is σ = 240219000. Its totient is φ = 206638080.

The previous prime is 223213201. The next prime is 223213217. The reversal of 223213213 is 312312322.

It can be written as a sum of positive squares in 4 ways, for example, as 43599609 + 179613604 = 6603^2 + 13402^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223213213 is a prime.

It is a super-3 number, since 3×223213213³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223213217) 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, 106588 + ... + 108661.

It is an arithmetic number, because the mean of its divisors is an integer number (30027375).

Almost surely, 2^223213213 is an apocalyptic number.

It is an amenable number.

223213213 is a deficient number, since it is larger than the sum of its proper divisors (17005787).

223213213 is a wasteful number, since it uses less digits than its factorization.

223213213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215327.

The product of its digits is 432, while the sum is 19.

The square root of 223213213 is about 14940.3217167503. The cubic root of 223213213 is about 606.6059040634.

Adding to 223213213 its reverse (312312322), we get a palindrome (535525535).

The spelling of 223213213 in words is "two hundred twenty-three million, two hundred thirteen thousand, two hundred thirteen".