213443012 has 6 divisors (see below), whose sum is σ = 373525278. Its totient is φ = 106721504.

The previous prime is 213443011. The next prime is 213443023. The reversal of 213443012 is 210344312.

It can be written as a sum of positive squares in only one way, i.e., 212693056 + 749956 = 14584^2 + 866^2 .

It is not an unprimeable number, because it can be changed into a prime (213443011) 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, 26680373 + ... + 26680380.

It is an arithmetic number, because the mean of its divisors is an integer number (62254213).

Almost surely, 2^213443012 is an apocalyptic number.

It is an amenable number.

213443012 is a deficient number, since it is larger than the sum of its proper divisors (160082266).

213443012 is a wasteful number, since it uses less digits than its factorization.

213443012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53360757 (or 53360755 counting only the distinct ones).

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

The square root of 213443012 is about 14609.6889768400. The cubic root of 213443012 is about 597.6230141845.

Adding to 213443012 its reverse (210344312), we get a palindrome (423787324).

The spelling of 213443012 in words is "two hundred thirteen million, four hundred forty-three thousand, twelve".