212323223 has 12 divisors (see below), whose sum is σ = 247298832. Its totient is φ = 181762560.

The previous prime is 212323219. The next prime is 212323229. The reversal of 212323223 is 322323212.

It is not a de Polignac number, because 212323223 - 2² = 212323219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212323195 and 212323204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212323229) 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 11 ways as a sum of consecutive naturals, for example, 45143 + ... + 49623.

It is an arithmetic number, because the mean of its divisors is an integer number (20608236).

Almost surely, 2^212323223 is an apocalyptic number.

212323223 is a deficient number, since it is larger than the sum of its proper divisors (34975609).

212323223 is an equidigital number, since it uses as much as digits as its factorization.

212323223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5462 (or 5455 counting only the distinct ones).

The product of its digits is 864, while the sum is 20.

The square root of 212323223 is about 14571.3150744880. The cubic root of 212323223 is about 596.5760752503.

Adding to 212323223 its reverse (322323212), we get a palindrome (534646435).

The spelling of 212323223 in words is "two hundred twelve million, three hundred twenty-three thousand, two hundred twenty-three".