223212433 has 4 divisors (see below), whose sum is σ = 225379648. Its totient is φ = 221045220.

The previous prime is 223212419. The next prime is 223212439. The reversal of 223212433 is 334212322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223212433 is a prime.

It is a super-3 number, since 3×223212433³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223212439) 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, 1083453 + ... + 1083658.

It is an arithmetic number, because the mean of its divisors is an integer number (56344912).

Almost surely, 2^223212433 is an apocalyptic number.

It is an amenable number.

223212433 is a deficient number, since it is larger than the sum of its proper divisors (2167215).

223212433 is a wasteful number, since it uses less digits than its factorization.

223212433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167214.

The product of its digits is 1728, while the sum is 22.

The square root of 223212433 is about 14940.2956128719. The cubic root of 223212433 is about 606.6051974846.

Adding to 223212433 its reverse (334212322), we get a palindrome (557424755).

The spelling of 223212433 in words is "two hundred twenty-three million, two hundred twelve thousand, four hundred thirty-three".