503311161 has 8 divisors (see below), whose sum is σ = 683743680. Its totient is φ = 329209712.

The previous prime is 503311117. The next prime is 503311189. The reversal of 503311161 is 161113305.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 503311161 - 2¹⁷ = 503180089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (503318161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1582581 + ... + 1582898.

It is an arithmetic number, because the mean of its divisors is an integer number (85467960).

Almost surely, 2^503311161 is an apocalyptic number.

It is an amenable number.

503311161 is a deficient number, since it is larger than the sum of its proper divisors (180432519).

503311161 is a wasteful number, since it uses less digits than its factorization.

503311161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165535.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 503311161 is about 22434.5974111416. The cubic root of 503311161 is about 795.4487194293.

Adding to 503311161 its reverse (161113305), we get a palindrome (664424466).

The spelling of 503311161 in words is "five hundred three million, three hundred eleven thousand, one hundred sixty-one".