43243117 has 2 divisors, whose sum is σ = 43243118. Its totient is φ = 43243116.

The previous prime is 43243111. The next prime is 43243133. The reversal of 43243117 is 71134234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27394756 + 15848361 = 5234^2 + 3981^2 .

It is a cyclic number.

It is not a de Polignac number, because 43243117 - 2¹¹ = 43241069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43243091 and 43243100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43243111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21621558 + 21621559.

It is an arithmetic number, because the mean of its divisors is an integer number (21621559).

Almost surely, 2^43243117 is an apocalyptic number.

It is an amenable number.

43243117 is a deficient number, since it is larger than the sum of its proper divisors (1).

43243117 is an equidigital number, since it uses as much as digits as its factorization.

43243117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 25.

The square root of 43243117 is about 6575.9498933614. The cubic root of 43243117 is about 350.9988257632.

The spelling of 43243117 in words is "forty-three million, two hundred forty-three thousand, one hundred seventeen".