212423311 has 16 divisors (see below), whose sum is σ = 224332416. Its totient is φ = 200936736.

The previous prime is 212423303. The next prime is 212423317. The reversal of 212423311 is 113324212.

It is a happy number.

212423311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212423311 - 2³ = 212423303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212423317) 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, 188596 + ... + 189718.

It is an arithmetic number, because the mean of its divisors is an integer number (14020776).

Almost surely, 2^212423311 is an apocalyptic number.

212423311 is a deficient number, since it is larger than the sum of its proper divisors (11909105).

212423311 is a wasteful number, since it uses less digits than its factorization.

212423311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302.

The product of its digits is 288, while the sum is 19.

The square root of 212423311 is about 14574.7490887493. The cubic root of 212423311 is about 596.6698014185.

Adding to 212423311 its reverse (113324212), we get a palindrome (325747523).

Subtracting from 212423311 its reverse (113324212), we obtain a palindrome (99099099).

The spelling of 212423311 in words is "two hundred twelve million, four hundred twenty-three thousand, three hundred eleven".