43213117 has 4 divisors (see below), whose sum is σ = 43229376. Its totient is φ = 43196860.

The previous prime is 43213109. The next prime is 43213141. The reversal of 43213117 is 71131234.

43213117 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71131234 = 2 ⋅35565617.

It is a cyclic number.

It is not a de Polignac number, because 43213117 - 2³ = 43213109 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 (43213217) 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, 3109 + ... + 9802.

It is an arithmetic number, because the mean of its divisors is an integer number (10807344).

Almost surely, 2^43213117 is an apocalyptic number.

It is an amenable number.

43213117 is a deficient number, since it is larger than the sum of its proper divisors (16259).

43213117 is a wasteful number, since it uses less digits than its factorization.

43213117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16258.

The product of its digits is 504, while the sum is 22.

The square root of 43213117 is about 6573.6684583268. The cubic root of 43213117 is about 350.9176382702.

The spelling of 43213117 in words is "forty-three million, two hundred thirteen thousand, one hundred seventeen".