212343215 has 12 divisors (see below), whose sum is σ = 296414136. Its totient is φ = 145606608.

The previous prime is 212343169. The next prime is 212343217. The reversal of 212343215 is 512343212.

212343215 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 212343215 - 2⁶ = 212343151 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 (212343217) 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, 433109 + ... + 433598.

It is an arithmetic number, because the mean of its divisors is an integer number (24701178).

Almost surely, 2^212343215 is an apocalyptic number.

212343215 is a deficient number, since it is larger than the sum of its proper divisors (84070921).

212343215 is an equidigital number, since it uses as much as digits as its factorization.

212343215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866726 (or 866719 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 212343215 is about 14572.0010636837. The cubic root of 212343215 is about 596.5947988649.

Adding to 212343215 its reverse (512343212), we get a palindrome (724686427).

The spelling of 212343215 in words is "two hundred twelve million, three hundred forty-three thousand, two hundred fifteen".