212344317 has 24 divisors (see below), whose sum is σ = 311196600. Its totient is φ = 139511808.

The previous prime is 212344309. The next prime is 212344333. The reversal of 212344317 is 713443212.

It is a happy number.

212344317 is a `hidden beast` number, since 2 + 1 + 2 + 344 + 317 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 30276 + 212314041 = 174^2 + 14571^2 .

It is not a de Polignac number, because 212344317 - 2³ = 212344309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212344357) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228109 + ... + 229037.

It is an arithmetic number, because the mean of its divisors is an integer number (12966525).

Almost surely, 2^212344317 is an apocalyptic number.

It is an amenable number.

212344317 is a deficient number, since it is larger than the sum of its proper divisors (98852283).

212344317 is a wasteful number, since it uses less digits than its factorization.

212344317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277 (or 1274 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 212344317 is about 14572.0388758746. The cubic root of 212344317 is about 596.5958309147.

Adding to 212344317 its reverse (713443212), we get a palindrome (925787529).

The spelling of 212344317 in words is "two hundred twelve million, three hundred forty-four thousand, three hundred seventeen".