212431323 has 16 divisors (see below), whose sum is σ = 305371136. Its totient is φ = 130580640.

The previous prime is 212431301. The next prime is 212431327. The reversal of 212431323 is 323134212.

It is not a de Polignac number, because 212431323 - 2⁶ = 212431259 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 212431323.

It is not an unprimeable number, because it can be changed into a prime (212431327) 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, 39888 + ... + 44898.

It is an arithmetic number, because the mean of its divisors is an integer number (19085696).

Almost surely, 2^212431323 is an apocalyptic number.

212431323 is a deficient number, since it is larger than the sum of its proper divisors (92939813).

212431323 is a wasteful number, since it uses less digits than its factorization.

212431323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6114.

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

The square root of 212431323 is about 14575.0239450918. The cubic root of 212431323 is about 596.6773028839.

Adding to 212431323 its reverse (323134212), we get a palindrome (535565535).

The spelling of 212431323 in words is "two hundred twelve million, four hundred thirty-one thousand, three hundred twenty-three".