223213442 has 8 divisors (see below), whose sum is σ = 335656332. Its totient is φ = 111328000.

The previous prime is 223213429. The next prime is 223213447. The reversal of 223213442 is 244312322.

It can be written as a sum of positive squares in 2 ways, for example, as 159037321 + 64176121 = 12611^2 + 8011^2 .

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

It is a super-3 number, since 3×223213442³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (223213447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138359 + ... + 139962.

Almost surely, 2^223213442 is an apocalyptic number.

223213442 is a deficient number, since it is larger than the sum of its proper divisors (112442890).

223213442 is a wasteful number, since it uses less digits than its factorization.

223213442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278724.

The product of its digits is 2304, while the sum is 23.

The square root of 223213442 is about 14940.3293805726. The cubic root of 223213442 is about 606.6061115074.

Adding to 223213442 its reverse (244312322), we get a palindrome (467525764).

The spelling of 223213442 in words is "two hundred twenty-three million, two hundred thirteen thousand, four hundred forty-two".