212344436 has 6 divisors (see below), whose sum is σ = 371602770. Its totient is φ = 106172216.

The previous prime is 212344423. The next prime is 212344439. The reversal of 212344436 is 634443212.

It can be written as a sum of positive squares in only one way, i.e., 212284900 + 59536 = 14570^2 + 244^2 .

It is a super-3 number, since 3×212344436³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212344399 and 212344408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212344439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26543051 + ... + 26543058.

It is an arithmetic number, because the mean of its divisors is an integer number (61933795).

Almost surely, 2^212344436 is an apocalyptic number.

It is an amenable number.

212344436 is a deficient number, since it is larger than the sum of its proper divisors (159258334).

212344436 is a wasteful number, since it uses less digits than its factorization.

212344436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53086113 (or 53086111 counting only the distinct ones).

The product of its digits is 13824, while the sum is 29.

The square root of 212344436 is about 14572.0429590363. The cubic root of 212344436 is about 596.5959423609.

Adding to 212344436 its reverse (634443212), we get a palindrome (846787648).

The spelling of 212344436 in words is "two hundred twelve million, three hundred forty-four thousand, four hundred thirty-six".