211223323 has 8 divisors (see below), whose sum is σ = 222682320. Its totient is φ = 199798560.

The previous prime is 211223321. The next prime is 211223371. The reversal of 211223323 is 323322112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211223323 - 2¹ = 211223321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 211223323.

It is not an unprimeable number, because it can be changed into a prime (211223321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4653 + ... + 21073.

It is an arithmetic number, because the mean of its divisors is an integer number (27835290).

Almost surely, 2^211223323 is an apocalyptic number.

211223323 is a deficient number, since it is larger than the sum of its proper divisors (11458997).

211223323 is a wasteful number, since it uses less digits than its factorization.

211223323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17117.

The product of its digits is 432, while the sum is 19.

The square root of 211223323 is about 14533.5241080751. The cubic root of 211223323 is about 595.5441417206.

Adding to 211223323 its reverse (323322112), we get a palindrome (534545435).

The spelling of 211223323 in words is "two hundred eleven million, two hundred twenty-three thousand, three hundred twenty-three".