213412223 has 4 divisors (see below), whose sum is σ = 213858240. Its totient is φ = 212966208.

The previous prime is 213412211. The next prime is 213412261. The reversal of 213412223 is 322214312.

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

It is a cyclic number.

It is not a de Polignac number, because 213412223 - 2²⁰ = 212363647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213412195 and 213412204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213412273) 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, 222290 + ... + 223247.

It is an arithmetic number, because the mean of its divisors is an integer number (53464560).

Almost surely, 2^213412223 is an apocalyptic number.

213412223 is a deficient number, since it is larger than the sum of its proper divisors (446017).

213412223 is an equidigital number, since it uses as much as digits as its factorization.

213412223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446016.

The product of its digits is 576, while the sum is 20.

The square root of 213412223 is about 14608.6352203072. The cubic root of 213412223 is about 597.5942772403.

Adding to 213412223 its reverse (322214312), we get a palindrome (535626535).

The spelling of 213412223 in words is "two hundred thirteen million, four hundred twelve thousand, two hundred twenty-three".