503243143 has 16 divisors (see below), whose sum is σ = 556450272. Its totient is φ = 452160000.

The previous prime is 503243141. The next prime is 503243161. The reversal of 503243143 is 341342305.

It is a cyclic number.

It is not a de Polignac number, because 503243143 - 2¹ = 503243141 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 (503243141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319548 + ... + 321118.

It is an arithmetic number, because the mean of its divisors is an integer number (34778142).

Almost surely, 2^503243143 is an apocalyptic number.

503243143 is a deficient number, since it is larger than the sum of its proper divisors (53207129).

503243143 is a wasteful number, since it uses less digits than its factorization.

503243143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 503243143 is about 22433.0814423699. The cubic root of 503243143 is about 795.4128852227.

Adding to 503243143 its reverse (341342305), we get a palindrome (844585448).

The spelling of 503243143 in words is "five hundred three million, two hundred forty-three thousand, one hundred forty-three".