43311109 has 2 divisors, whose sum is σ = 43311110. Its totient is φ = 43311108.

The previous prime is 43311101. The next prime is 43311113. The reversal of 43311109 is 90111334.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37478884 + 5832225 = 6122^2 + 2415^2 .

It is a cyclic number.

It is not a de Polignac number, because 43311109 - 2³ = 43311101 is a prime.

It is equal to p_2622208 and since 43311109 and 2622208 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43311109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43311101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21655554 + 21655555.

It is an arithmetic number, because the mean of its divisors is an integer number (21655555).

Almost surely, 2^43311109 is an apocalyptic number.

It is an amenable number.

43311109 is a deficient number, since it is larger than the sum of its proper divisors (1).

43311109 is an equidigital number, since it uses as much as digits as its factorization.

43311109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 43311109 is about 6581.1176102544. The cubic root of 43311109 is about 351.1826902089.

The spelling of 43311109 in words is "forty-three million, three hundred eleven thousand, one hundred nine".