503421311 has 8 divisors (see below), whose sum is σ = 516668544. Its totient is φ = 490345240.

The previous prime is 503421299. The next prime is 503421337. The reversal of 503421311 is 113124305.

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

It is a cyclic number.

It is not a de Polignac number, because 503421311 - 2¹⁰ = 503420287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503421911) 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, 36821 + ... + 48606.

It is an arithmetic number, because the mean of its divisors is an integer number (64583568).

Almost surely, 2^503421311 is an apocalyptic number.

503421311 is a deficient number, since it is larger than the sum of its proper divisors (13247233).

503421311 is an equidigital number, since it uses as much as digits as its factorization.

503421311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85581.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 503421311 is about 22437.0521905174. The cubic root of 503421311 is about 795.5067433664.

Adding to 503421311 its reverse (113124305), we get a palindrome (616545616).

The spelling of 503421311 in words is "five hundred three million, four hundred twenty-one thousand, three hundred eleven".