320120203 has 4 divisors (see below), whose sum is σ = 344744848. Its totient is φ = 295495560.

The previous prime is 320120201. The next prime is 320120219. The reversal of 320120203 is 302021023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302021023 = 907 ⋅332989.

It is a cyclic number.

It is not a de Polignac number, because 320120203 - 2¹ = 320120201 is a prime.

It is a super-2 number, since 2×320120203² = 204953888737522418, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 24624631 = 320120203 / (3 + 2 + 0 + 1 + 2 + 0 + 2 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320120201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12312303 + ... + 12312328.

It is an arithmetic number, because the mean of its divisors is an integer number (86186212).

Almost surely, 2^320120203 is an apocalyptic number.

320120203 is a deficient number, since it is larger than the sum of its proper divisors (24624645).

320120203 is a wasteful number, since it uses less digits than its factorization.

320120203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24624644.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 320120203 is about 17891.9032805345. The cubic root of 320120203 is about 684.0760113822.

Adding to 320120203 its reverse (302021023), we get a palindrome (622141226).

The spelling of 320120203 in words is "three hundred twenty million, one hundred twenty thousand, two hundred three".