43248109 has 4 divisors (see below), whose sum is σ = 43317280. Its totient is φ = 43178940.

The previous prime is 43248091. The next prime is 43248113. The reversal of 43248109 is 90184234.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43248109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43248409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33639 + ... + 34900.

It is an arithmetic number, because the mean of its divisors is an integer number (10829320).

Almost surely, 2^43248109 is an apocalyptic number.

It is an amenable number.

43248109 is a deficient number, since it is larger than the sum of its proper divisors (69171).

43248109 is an equidigital number, since it uses as much as digits as its factorization.

43248109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69170.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 43248109 is about 6576.3294473437. The cubic root of 43248109 is about 351.0123317177.

The spelling of 43248109 in words is "forty-three million, two hundred forty-eight thousand, one hundred nine".