503361311321 has 16 divisors (see below), whose sum is σ = 550329292800. Its totient is φ = 456595460880.

The previous prime is 503361311279. The next prime is 503361311359. The reversal of 503361311321 is 123113163305.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503361311321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503361311021) 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, 13073120 + ... + 13111566.

It is an arithmetic number, because the mean of its divisors is an integer number (34395580800).

Almost surely, 2^503361311321 is an apocalyptic number.

It is an amenable number.

503361311321 is a deficient number, since it is larger than the sum of its proper divisors (46967981479).

503361311321 is a wasteful number, since it uses less digits than its factorization.

503361311321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41044.

The product of its (nonzero) digits is 4860, while the sum is 29.

Adding to 503361311321 its reverse (123113163305), we get a palindrome (626474474626).

The spelling of 503361311321 in words is "five hundred three billion, three hundred sixty-one million, three hundred eleven thousand, three hundred twenty-one".