43223123 has 4 divisors (see below), whose sum is σ = 43257648. Its totient is φ = 43188600.

The previous prime is 43223113. The next prime is 43223149. The reversal of 43223123 is 32132234.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43223123 - 2¹² = 43219027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43223095 and 43223104.

It is not an unprimeable number, because it can be changed into a prime (43223113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15311 + ... + 17912.

It is an arithmetic number, because the mean of its divisors is an integer number (10814412).

Almost surely, 2^43223123 is an apocalyptic number.

43223123 is a deficient number, since it is larger than the sum of its proper divisors (34525).

43223123 is a wasteful number, since it uses less digits than its factorization.

43223123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34524.

The product of its digits is 864, while the sum is 20.

The square root of 43223123 is about 6574.4294809512. The cubic root of 43223123 is about 350.9447211805.

Adding to 43223123 its reverse (32132234), we get a palindrome (75355357).

The spelling of 43223123 in words is "forty-three million, two hundred twenty-three thousand, one hundred twenty-three".