320203 has 4 divisors (see below), whose sum is σ = 344848. Its totient is φ = 295560.

The previous prime is 320179. The next prime is 320209. The reversal of 320203 is 302023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302023 = 149 ⋅2027.

It is a cyclic number.

It is not a de Polignac number, because 320203 - 2⁹ = 319691 is a prime.

It is a super-2 number, since 2×320203² = 205059922418, which contains 22 as substring.

It is a Duffinian number.

320203 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 320203.

It is not an unprimeable number, because it can be changed into a prime (320209) 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, 12303 + ... + 12328.

It is an arithmetic number, because the mean of its divisors is an integer number (86212).

2³²⁰²⁰³ is an apocalyptic number.

320203 is a deficient number, since it is larger than the sum of its proper divisors (24645).

320203 is a wasteful number, since it uses less digits than its factorization.

320203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24644.

The product of its (nonzero) digits is 36, while the sum is 10.

The square root of 320203 is about 565.8648248478. The cubic root of 320203 is about 68.4134983563.

Adding to 320203 its reverse (302023), we get a palindrome (622226).

It can be divided in two parts, 32020 and 3, that added together give a palindrome (32023).

The spelling of 320203 in words is "three hundred twenty thousand, two hundred three", and thus it is an iban number.