503311061011 has 4 divisors (see below), whose sum is σ = 549066612024. Its totient is φ = 457555510000.

The previous prime is 503311060981. The next prime is 503311061059. The reversal of 503311061011 is 110160113305.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 503311061011 - 2³⁷ = 365872107539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503311061411) 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, 22877775490 + ... + 22877775511.

It is an arithmetic number, because the mean of its divisors is an integer number (137266653006).

Almost surely, 2^503311061011 is an apocalyptic number.

503311061011 is a deficient number, since it is larger than the sum of its proper divisors (45755551013).

503311061011 is a wasteful number, since it uses less digits than its factorization.

503311061011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45755551012.

The product of its (nonzero) digits is 270, while the sum is 22.

Adding to 503311061011 its reverse (110160113305), we get a palindrome (613471174316).

The spelling of 503311061011 in words is "five hundred three billion, three hundred eleven million, sixty-one thousand, eleven".