213224233 has 4 divisors (see below), whose sum is σ = 213580800. Its totient is φ = 212867668.

The previous prime is 213224201. The next prime is 213224243. The reversal of 213224233 is 332422312.

213224233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 213224233 - 2⁵ = 213224201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213224243) 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, 177385 + ... + 178582.

It is an arithmetic number, because the mean of its divisors is an integer number (53395200).

Almost surely, 2^213224233 is an apocalyptic number.

It is an amenable number.

213224233 is a deficient number, since it is larger than the sum of its proper divisors (356567).

213224233 is an equidigital number, since it uses as much as digits as its factorization.

213224233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356566.

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

The square root of 213224233 is about 14602.1995945816. The cubic root of 213224233 is about 597.4187565989.

Adding to 213224233 its reverse (332422312), we get a palindrome (545646545).

The spelling of 213224233 in words is "two hundred thirteen million, two hundred twenty-four thousand, two hundred thirty-three".