43242313 has 4 divisors (see below), whose sum is σ = 43309188. Its totient is φ = 43175440.

The previous prime is 43242301. The next prime is 43242317. The reversal of 43242313 is 31324234.

It is a happy number.

43242313 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 22155849 + 21086464 = 4707^2 + 4592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43242313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43242317) 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, 32458 + ... + 33763.

It is an arithmetic number, because the mean of its divisors is an integer number (10827297).

Almost surely, 2^43242313 is an apocalyptic number.

It is an amenable number.

43242313 is a deficient number, since it is larger than the sum of its proper divisors (66875).

43242313 is an equidigital number, since it uses as much as digits as its factorization.

43242313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66874.

The product of its digits is 1728, while the sum is 22.

The square root of 43242313 is about 6575.8887612246. Note that the first 3 decimals coincide. The cubic root of 43242313 is about 350.9966504281.

Adding to 43242313 its reverse (31324234), we get a palindrome (74566547).

It can be divided in two parts, 4324231 and 3, that added together give a palindrome (4324234).

The spelling of 43242313 in words is "forty-three million, two hundred forty-two thousand, three hundred thirteen".