43007213 has 4 divisors (see below), whose sum is σ = 43023228. Its totient is φ = 42991200.

The previous prime is 43007191. The next prime is 43007269. The reversal of 43007213 is 31270034.

43007213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29626249 + 13380964 = 5443^2 + 3658^2 .

It is a cyclic number.

It is not a de Polignac number, because 43007213 - 2¹² = 43003117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43007413) 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 in 3 ways as a sum of consecutive naturals, for example, 2888 + ... + 9713.

It is an arithmetic number, because the mean of its divisors is an integer number (10755807).

Almost surely, 2^43007213 is an apocalyptic number.

It is an amenable number.

43007213 is a deficient number, since it is larger than the sum of its proper divisors (16015).

43007213 is a wasteful number, since it uses less digits than its factorization.

43007213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16014.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 43007213 is about 6557.9884873336. The cubic root of 43007213 is about 350.3593940987.

Adding to 43007213 its reverse (31270034), we get a palindrome (74277247).

The spelling of 43007213 in words is "forty-three million, seven thousand, two hundred thirteen".