320240203 has 4 divisors (see below), whose sum is σ = 339077880. Its totient is φ = 301402528.

The previous prime is 320240189. The next prime is 320240227. The reversal of 320240203 is 302042023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302042023 = 71 ⋅4254113.

It is a cyclic number.

It is not a de Polignac number, because 320240203 - 2⁵ = 320240171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320240303) 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, 9418813 + ... + 9418846.

It is an arithmetic number, because the mean of its divisors is an integer number (84769470).

Almost surely, 2^320240203 is an apocalyptic number.

320240203 is a deficient number, since it is larger than the sum of its proper divisors (18837677).

320240203 is a wasteful number, since it uses less digits than its factorization.

320240203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18837676.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 320240203 is about 17895.2564385091. The cubic root of 320240203 is about 684.1614780969.

Adding to 320240203 its reverse (302042023), we get a palindrome (622282226).

The spelling of 320240203 in words is "three hundred twenty million, two hundred forty thousand, two hundred three".