43109219 has 2 divisors, whose sum is σ = 43109220. Its totient is φ = 43109218.

The previous prime is 43109191. The next prime is 43109221. The reversal of 43109219 is 91290134.

It is a happy number.

43109219 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 is a cyclic number.

It is not a de Polignac number, because 43109219 - 2¹² = 43105123 is a prime.

It is a super-2 number, since 2×43109219² = 3716809525579922, which contains 22 as substring.

Together with 43109221, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 43109191 and 43109200.

It is not a weakly prime, because it can be changed into another prime (43109719) 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, 21554609 + 21554610.

It is an arithmetic number, because the mean of its divisors is an integer number (21554610).

Almost surely, 2^43109219 is an apocalyptic number.

43109219 is a deficient number, since it is larger than the sum of its proper divisors (1).

43109219 is an equidigital number, since it uses as much as digits as its factorization.

43109219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 43109219 is about 6565.7611135344. The cubic root of 43109219 is about 350.6361735779.

The spelling of 43109219 in words is "forty-three million, one hundred nine thousand, two hundred nineteen".