503103311 has 16 divisors (see below), whose sum is σ = 539261184. Its totient is φ = 468224064.

The previous prime is 503103269. The next prime is 503103313. The reversal of 503103311 is 113301305.

It is not a de Polignac number, because 503103311 - 2¹⁸ = 502841167 is a prime.

It is a super-2 number, since 2×503103311² = 506225883078325442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 503103311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503103313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302795 + ... + 304451.

It is an arithmetic number, because the mean of its divisors is an integer number (33703824).

Almost surely, 2^503103311 is an apocalyptic number.

503103311 is a deficient number, since it is larger than the sum of its proper divisors (36157873).

503103311 is a wasteful number, since it uses less digits than its factorization.

503103311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030.

The product of its (nonzero) digits is 135, while the sum is 17.

The square root of 503103311 is about 22429.9645786613. The cubic root of 503103311 is about 795.3392068035.

Adding to 503103311 its reverse (113301305), we get a palindrome (616404616).

The spelling of 503103311 in words is "five hundred three million, one hundred three thousand, three hundred eleven".