143203 has 4 divisors (see below), whose sum is σ = 150760. Its totient is φ = 135648.

The previous prime is 143197. The next prime is 143239. The reversal of 143203 is 302341.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143203 is a prime.

It is a Duffinian number.

143203 is a lucky number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (143243) 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, 3750 + ... + 3787.

It is an arithmetic number, because the mean of its divisors is an integer number (37690).

2¹⁴³²⁰³ is an apocalyptic number.

143203 is a deficient number, since it is larger than the sum of its proper divisors (7557).

143203 is an equidigital number, since it uses as much as digits as its factorization.

143203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7556.

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

The square root of 143203 is about 378.4217224209. The cubic root of 143203 is about 52.3179484259.

Adding to 143203 its reverse (302341), we get a palindrome (445544).

The spelling of 143203 in words is "one hundred forty-three thousand, two hundred three", and thus it is an iban number.