212204323 has 4 divisors (see below), whose sum is σ = 212293080. Its totient is φ = 212115568.

The previous prime is 212204273. The next prime is 212204327. The reversal of 212204323 is 323402212.

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

It is a cyclic number.

It is not a de Polignac number, because 212204323 - 2²¹ = 210107171 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 212204323.

It is not an unprimeable number, because it can be changed into a prime (212204327) 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, 40690 + ... + 45607.

It is an arithmetic number, because the mean of its divisors is an integer number (53073270).

Almost surely, 2^212204323 is an apocalyptic number.

212204323 is a deficient number, since it is larger than the sum of its proper divisors (88757).

212204323 is an equidigital number, since it uses as much as digits as its factorization.

212204323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88756.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 212204323 is about 14567.2345694027. The cubic root of 212204323 is about 596.4646945306.

Adding to 212204323 its reverse (323402212), we get a palindrome (535606535).

The spelling of 212204323 in words is "two hundred twelve million, two hundred four thousand, three hundred twenty-three".