213223323 has 4 divisors (see below), whose sum is σ = 284297768. Its totient is φ = 142148880.

The previous prime is 213223313. The next prime is 213223343. The reversal of 213223323 is 323322312.

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

It is not a de Polignac number, because 213223323 - 2²² = 209029019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213223323.

It is not an unprimeable number, because it can be changed into a prime (213223303) 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, 35537218 + ... + 35537223.

It is an arithmetic number, because the mean of its divisors is an integer number (71074442).

Almost surely, 2^213223323 is an apocalyptic number.

213223323 is a deficient number, since it is larger than the sum of its proper divisors (71074445).

213223323 is an equidigital number, since it uses as much as digits as its factorization.

213223323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71074444.

The product of its digits is 1296, while the sum is 21.

The square root of 213223323 is about 14602.1684348593. The cubic root of 213223323 is about 597.4179067083.

Adding to 213223323 its reverse (323322312), we get a palindrome (536545635).

The spelling of 213223323 in words is "two hundred thirteen million, two hundred twenty-three thousand, three hundred twenty-three".