211243323 has 16 divisors (see below), whose sum is σ = 290259200. Its totient is φ = 136554336.

The previous prime is 211243321. The next prime is 211243367. The reversal of 211243323 is 323342112.

It is not a de Polignac number, because 211243323 - 2¹ = 211243321 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 211243323.

It is not an unprimeable number, because it can be changed into a prime (211243321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30978 + ... + 37176.

It is an arithmetic number, because the mean of its divisors is an integer number (18141200).

Almost surely, 2^211243323 is an apocalyptic number.

211243323 is a deficient number, since it is larger than the sum of its proper divisors (79015877).

211243323 is a wasteful number, since it uses less digits than its factorization.

211243323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6546.

The product of its digits is 864, while the sum is 21.

The square root of 211243323 is about 14534.2121561507. The cubic root of 211243323 is about 595.5629377934.

Adding to 211243323 its reverse (323342112), we get a palindrome (534585435).

The spelling of 211243323 in words is "two hundred eleven million, two hundred forty-three thousand, three hundred twenty-three".