503143 has 4 divisors (see below), whose sum is σ = 514888. Its totient is φ = 491400.

The previous prime is 503137. The next prime is 503147. The reversal of 503143 is 341305.

503143 is nontrivially palindromic in base 7.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341305 = 5 ⋅68261.

It is a cyclic number.

It is not a de Polignac number, because 503143 - 2⁹ = 502631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503147) 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, 5808 + ... + 5893.

It is an arithmetic number, because the mean of its divisors is an integer number (128722).

2⁵⁰³¹⁴³ is an apocalyptic number.

503143 is a deficient number, since it is larger than the sum of its proper divisors (11745).

503143 is a wasteful number, since it uses less digits than its factorization.

503143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11744.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 503143 is about 709.3257361749. The cubic root of 503143 is about 79.5360120591.

Adding to 503143 its reverse (341305), we get a palindrome (844448).

It can be divided in two parts, 503 and 143, that added together give a palindrome (646).

The spelling of 503143 in words is "five hundred three thousand, one hundred forty-three".