212343169 has 2 divisors, whose sum is σ = 212343170. Its totient is φ = 212343168.

The previous prime is 212343163. The next prime is 212343217. The reversal of 212343169 is 961343212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206640625 + 5702544 = 14375^2 + 2388^2 .

It is a cyclic number.

It is not a de Polignac number, because 212343169 - 2³ = 212343161 is a prime.

It is a super-2 number, since 2×212343169² = 90179242841925122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212343169.

It is not a weakly prime, because it can be changed into another prime (212343161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106171584 + 106171585.

It is an arithmetic number, because the mean of its divisors is an integer number (106171585).

Almost surely, 2^212343169 is an apocalyptic number.

It is an amenable number.

212343169 is a deficient number, since it is larger than the sum of its proper divisors (1).

212343169 is an equidigital number, since it uses as much as digits as its factorization.

212343169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 212343169 is about 14571.9994853143. Note that the first 3 decimals coincide. The cubic root of 212343169 is about 596.5947557847.

The spelling of 212343169 in words is "two hundred twelve million, three hundred forty-three thousand, one hundred sixty-nine".