43431212 has 48 divisors (see below), whose sum is σ = 86879520. Its totient is φ = 18816000.

The previous prime is 43431203. The next prime is 43431233. The reversal of 43431212 is 21213434.

43431212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 128708 + ... + 129044.

It is an arithmetic number, because the mean of its divisors is an integer number (1809990).

Almost surely, 2^43431212 is an apocalyptic number.

It is an amenable number.

43431212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

43431212 is a wasteful number, since it uses less digits than its factorization.

43431212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 480 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 43431212 is about 6590.2361110965. The cubic root of 43431212 is about 351.5070039822.

Adding to 43431212 its reverse (21213434), we get a palindrome (64644646).

It can be divided in two parts, 4343 and 1212, that added together give a palindrome (5555).

The spelling of 43431212 in words is "forty-three million, four hundred thirty-one thousand, two hundred twelve".