43241213 has 2 divisors, whose sum is σ = 43241214. Its totient is φ = 43241212.

The previous prime is 43241179. The next prime is 43241267. The reversal of 43241213 is 31214234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22108804 + 21132409 = 4702^2 + 4597^2 .

It is a cyclic number.

It is not a de Polignac number, because 43241213 - 2²⁰ = 42192637 is a prime.

It is a super-3 number, since 3×43241213³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43241713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21620606 + 21620607.

It is an arithmetic number, because the mean of its divisors is an integer number (21620607).

Almost surely, 2^43241213 is an apocalyptic number.

It is an amenable number.

43241213 is a deficient number, since it is larger than the sum of its proper divisors (1).

43241213 is an equidigital number, since it uses as much as digits as its factorization.

43241213 is an odious number, because the sum of its binary digits is odd.

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

The square root of 43241213 is about 6575.8051218083. The cubic root of 43241213 is about 350.9936741798.

Adding to 43241213 its reverse (31214234), we get a palindrome (74455447).

The spelling of 43241213 in words is "forty-three million, two hundred forty-one thousand, two hundred thirteen".