503430103 has 16 divisors (see below), whose sum is σ = 577815840. Its totient is φ = 434419200.

The previous prime is 503430101. The next prime is 503430121. The reversal of 503430103 is 301034305.

It is a cyclic number.

It is not a de Polignac number, because 503430103 - 2¹ = 503430101 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503430101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1603 + ... + 31771.

It is an arithmetic number, because the mean of its divisors is an integer number (36113490).

Almost surely, 2^503430103 is an apocalyptic number.

503430103 is a deficient number, since it is larger than the sum of its proper divisors (74385737).

503430103 is a wasteful number, since it uses less digits than its factorization.

503430103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30258.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 503430103 is about 22437.2481155778. The cubic root of 503430103 is about 795.5113743812.

Adding to 503430103 its reverse (301034305), we get a palindrome (804464408).

The spelling of 503430103 in words is "five hundred three million, four hundred thirty thousand, one hundred three".