223228813 has 2 divisors, whose sum is σ = 223228814. Its totient is φ = 223228812.

The previous prime is 223228769. The next prime is 223228903. The reversal of 223228813 is 318822322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186104164 + 37124649 = 13642^2 + 6093^2 .

It is a cyclic number.

It is not a de Polignac number, because 223228813 - 2²¹ = 221131661 is a prime.

It is a super-3 number, since 3×223228813³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223228013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111614406 + 111614407.

It is an arithmetic number, because the mean of its divisors is an integer number (111614407).

Almost surely, 2^223228813 is an apocalyptic number.

It is an amenable number.

223228813 is a deficient number, since it is larger than the sum of its proper divisors (1).

223228813 is an equidigital number, since it uses as much as digits as its factorization.

223228813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 31.

The square root of 223228813 is about 14940.8437847399. The cubic root of 223228813 is about 606.6200352933.

The spelling of 223228813 in words is "two hundred twenty-three million, two hundred twenty-eight thousand, eight hundred thirteen".