203143 has 4 divisors (see below), whose sum is σ = 209728. Its totient is φ = 196560.

The previous prime is 203141. The next prime is 203173. The reversal of 203143 is 341302.

203143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 203143 - 2¹ = 203141 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203141) 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, 3246 + ... + 3307.

It is an arithmetic number, because the mean of its divisors is an integer number (52432).

2²⁰³¹⁴³ is an apocalyptic number.

203143 is a deficient number, since it is larger than the sum of its proper divisors (6585).

203143 is an equidigital number, since it uses as much as digits as its factorization.

203143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6584.

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

The square root of 203143 is about 450.7138781977. The cubic root of 203143 is about 58.7851035120.

Adding to 203143 its reverse (341302), we get a palindrome (544445).

The spelling of 203143 in words is "two hundred three thousand, one hundred forty-three", and thus it is an iban number.