43145223 has 8 divisors (see below), whose sum is σ = 62756736. Its totient is φ = 26148600.

The previous prime is 43145191. The next prime is 43145237. The reversal of 43145223 is 32254134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43145223 - 2⁵ = 43145191 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 43145193 and 43145202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43145023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653683 + ... + 653748.

It is an arithmetic number, because the mean of its divisors is an integer number (7844592).

Almost surely, 2^43145223 is an apocalyptic number.

43145223 is a deficient number, since it is larger than the sum of its proper divisors (19611513).

43145223 is a wasteful number, since it uses less digits than its factorization.

43145223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307445.

The product of its digits is 2880, while the sum is 24.

The square root of 43145223 is about 6568.5023407166. The cubic root of 43145223 is about 350.7337613034.

Adding to 43145223 its reverse (32254134), we get a palindrome (75399357).

It can be divided in two parts, 431 and 45223, that added together give a palindrome (45654).

The spelling of 43145223 in words is "forty-three million, one hundred forty-five thousand, two hundred twenty-three".