213103223 has 4 divisors (see below), whose sum is σ = 220451640. Its totient is φ = 205754808.

The previous prime is 213103201. The next prime is 213103237. The reversal of 213103223 is 322301312.

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 213103223 - 2⁶ = 213103159 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 (213105223) 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, 3674165 + ... + 3674222.

It is an arithmetic number, because the mean of its divisors is an integer number (55112910).

Almost surely, 2^213103223 is an apocalyptic number.

213103223 is a deficient number, since it is larger than the sum of its proper divisors (7348417).

213103223 is an equidigital number, since it uses as much as digits as its factorization.

213103223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7348416.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 213103223 is about 14598.0554526964. The cubic root of 213103223 is about 597.3057185964.

Adding to 213103223 its reverse (322301312), we get a palindrome (535404535).

The spelling of 213103223 in words is "two hundred thirteen million, one hundred three thousand, two hundred twenty-three".