320224403 has 4 divisors (see below), whose sum is σ = 323822520. Its totient is φ = 316626288.

The previous prime is 320224379. The next prime is 320224453. The reversal of 320224403 is 304422023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304422023 = 2113 ⋅144071.

It is a cyclic number.

It is not a de Polignac number, because 320224403 - 2¹⁴ = 320208019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320224453) 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, 1798925 + ... + 1799102.

It is an arithmetic number, because the mean of its divisors is an integer number (80955630).

Almost surely, 2^320224403 is an apocalyptic number.

320224403 is a deficient number, since it is larger than the sum of its proper divisors (3598117).

320224403 is an equidigital number, since it uses as much as digits as its factorization.

320224403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3598116.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 320224403 is about 17894.8149752938. The cubic root of 320224403 is about 684.1502262001.

Adding to 320224403 its reverse (304422023), we get a palindrome (624646426).

The spelling of 320224403 in words is "three hundred twenty million, two hundred twenty-four thousand, four hundred three".