212444343 has 32 divisors (see below), whose sum is σ = 334430400. Its totient is φ = 133031808.

The previous prime is 212444341. The next prime is 212444347. The reversal of 212444343 is 343444212.

It is a happy number.

212444343 is a `hidden beast` number, since 212 + 4 + 443 + 4 + 3 = 666.

It is not a de Polignac number, because 212444343 - 2¹ = 212444341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212444341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25305 + ... + 32637.

It is an arithmetic number, because the mean of its divisors is an integer number (10450950).

Almost surely, 2^212444343 is an apocalyptic number.

212444343 is a deficient number, since it is larger than the sum of its proper divisors (121986057).

212444343 is a wasteful number, since it uses less digits than its factorization.

212444343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7408 (or 7402 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 212444343 is about 14575.4705927459. The cubic root of 212444343 is about 596.6894928310.

Adding to 212444343 its reverse (343444212), we get a palindrome (555888555).

The spelling of 212444343 in words is "two hundred twelve million, four hundred forty-four thousand, three hundred forty-three".