503349321 has 16 divisors (see below), whose sum is σ = 685215936. Its totient is φ = 328550976.

The previous prime is 503349313. The next prime is 503349337. The reversal of 503349321 is 123943305.

It is not a de Polignac number, because 503349321 - 2³ = 503349313 is a prime.

It is a super-2 number, since 2×503349321² = 506721077902322082, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (503349391) 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, 80131 + ... + 86183.

It is an arithmetic number, because the mean of its divisors is an integer number (42825996).

Almost surely, 2^503349321 is an apocalyptic number.

It is an amenable number.

503349321 is a deficient number, since it is larger than the sum of its proper divisors (181866615).

503349321 is a wasteful number, since it uses less digits than its factorization.

503349321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6632.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 503349321 is about 22435.4478671588. The cubic root of 503349321 is about 795.4688220076.

The spelling of 503349321 in words is "five hundred three million, three hundred forty-nine thousand, three hundred twenty-one".