143903 has 4 divisors (see below), whose sum is σ = 145008. Its totient is φ = 142800.

The previous prime is 143881. The next prime is 143909. The reversal of 143903 is 309341.

143903 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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 309341 = 83 ⋅3727.

It is a cyclic number.

It is not a de Polignac number, because 143903 - 2¹⁶ = 78367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143903.

It is not an unprimeable number, because it can be changed into a prime (143909) 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, 326 + ... + 627.

It is an arithmetic number, because the mean of its divisors is an integer number (36252).

2¹⁴³⁹⁰³ is an apocalyptic number.

143903 is a deficient number, since it is larger than the sum of its proper divisors (1105).

143903 is an equidigital number, since it uses as much as digits as its factorization.

143903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 143903 is about 379.3454889675. The cubic root of 143903 is about 52.4030561704.

The spelling of 143903 in words is "one hundred forty-three thousand, nine hundred three".