213817223 has 6 divisors (see below), whose sum is σ = 223186824. Its totient is φ = 204453744.

The previous prime is 213817207. The next prime is 213817237. The reversal of 213817223 is 322718312.

It is not a de Polignac number, because 213817223 - 2⁴ = 213817207 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 (213817273) 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 5 ways as a sum of consecutive naturals, for example, 68603 + ... + 71651.

It is an arithmetic number, because the mean of its divisors is an integer number (37197804).

Almost surely, 2^213817223 is an apocalyptic number.

213817223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

213817223 is a deficient number, since it is larger than the sum of its proper divisors (9369601).

213817223 is an frugal number, since it uses more digits than its factorization.

213817223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6121 (or 3072 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 213817223 is about 14622.4903145805. The cubic root of 213817223 is about 597.9720636979.

The spelling of 213817223 in words is "two hundred thirteen million, eight hundred seventeen thousand, two hundred twenty-three".