43115117 has 2 divisors, whose sum is σ = 43115118. Its totient is φ = 43115116.

The previous prime is 43115099. The next prime is 43115131. The reversal of 43115117 is 71151134.

It is a happy number.

43115117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27520516 + 15594601 = 5246^2 + 3949^2 .

It is a cyclic number.

It is not a de Polignac number, because 43115117 - 2¹² = 43111021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43115092 and 43115101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43115147) 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 as a sum of consecutive naturals, namely, 21557558 + 21557559.

It is an arithmetic number, because the mean of its divisors is an integer number (21557559).

Almost surely, 2^43115117 is an apocalyptic number.

It is an amenable number.

43115117 is a deficient number, since it is larger than the sum of its proper divisors (1).

43115117 is an equidigital number, since it uses as much as digits as its factorization.

43115117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 420, while the sum is 23.

The square root of 43115117 is about 6566.2102464055. The cubic root of 43115117 is about 350.6521636444.

The spelling of 43115117 in words is "forty-three million, one hundred fifteen thousand, one hundred seventeen".