212143311 has 12 divisors (see below), whose sum is σ = 314711592. Its totient is φ = 137606256.

The previous prime is 212143301. The next prime is 212143319. The reversal of 212143311 is 113341212.

212143311 is a `hidden beast` number, since 212 + 143 + 311 = 666.

212143311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212143311 - 2¹¹ = 212141263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212143319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318201 + ... + 318866.

It is an arithmetic number, because the mean of its divisors is an integer number (26225966).

Almost surely, 2^212143311 is an apocalyptic number.

212143311 is a deficient number, since it is larger than the sum of its proper divisors (102568281).

212143311 is a wasteful number, since it uses less digits than its factorization.

212143311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637110 (or 637107 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 212143311 is about 14565.1402670898. The cubic root of 212143311 is about 596.4075247996.

Adding to 212143311 its reverse (113341212), we get a palindrome (325484523).

The spelling of 212143311 in words is "two hundred twelve million, one hundred forty-three thousand, three hundred eleven".