43081117 has 2 divisors, whose sum is σ = 43081118. Its totient is φ = 43081116.

The previous prime is 43081109. The next prime is 43081121. The reversal of 43081117 is 71118034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30591961 + 12489156 = 5531^2 + 3534^2 .

It is a cyclic number.

It is not a de Polignac number, because 43081117 - 2³ = 43081109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43081091 and 43081100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43081817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21540558 + 21540559.

It is an arithmetic number, because the mean of its divisors is an integer number (21540559).

Almost surely, 2^43081117 is an apocalyptic number.

It is an amenable number.

43081117 is a deficient number, since it is larger than the sum of its proper divisors (1).

43081117 is an equidigital number, since it uses as much as digits as its factorization.

43081117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 43081117 is about 6563.6207233508. The cubic root of 43081117 is about 350.5599662154.

The spelling of 43081117 in words is "forty-three million, eighty-one thousand, one hundred seventeen".