223312213 has 4 divisors (see below), whose sum is σ = 223344940. Its totient is φ = 223279488.

The previous prime is 223312157. The next prime is 223312231. The reversal of 223312213 is 312213322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117983044 + 105329169 = 10862^2 + 10263^2 .

It is a cyclic number.

It is not a de Polignac number, because 223312213 - 2²¹ = 221215061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223312013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1818 + ... + 21211.

It is an arithmetic number, because the mean of its divisors is an integer number (55836235).

Almost surely, 2^223312213 is an apocalyptic number.

It is an amenable number.

223312213 is a deficient number, since it is larger than the sum of its proper divisors (32727).

223312213 is an equidigital number, since it uses as much as digits as its factorization.

223312213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32726.

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

The square root of 223312213 is about 14943.6345311306. The cubic root of 223312213 is about 606.6955718560.

Adding to 223312213 its reverse (312213322), we get a palindrome (535525535).

The spelling of 223312213 in words is "two hundred twenty-three million, three hundred twelve thousand, two hundred thirteen".