43420323 has 4 divisors (see below), whose sum is σ = 57893768. Its totient is φ = 28946880.

The previous prime is 43420319. The next prime is 43420331. The reversal of 43420323 is 32302434.

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

It is not a de Polignac number, because 43420323 - 2² = 43420319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43420323.

It is not an unprimeable number, because it can be changed into a prime (43420393) 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, 7236718 + ... + 7236723.

It is an arithmetic number, because the mean of its divisors is an integer number (14473442).

Almost surely, 2^43420323 is an apocalyptic number.

43420323 is a deficient number, since it is larger than the sum of its proper divisors (14473445).

43420323 is a wasteful number, since it uses less digits than its factorization.

43420323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14473444.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 43420323 is about 6589.4099128829. The cubic root of 43420323 is about 351.4776251130.

Adding to 43420323 its reverse (32302434), we get a palindrome (75722757).

The spelling of 43420323 in words is "forty-three million, four hundred twenty thousand, three hundred twenty-three".