503231011 has 4 divisors (see below), whose sum is σ = 505088224. Its totient is φ = 501373800.

The previous prime is 503230993. The next prime is 503231051. The reversal of 503231011 is 110132305.

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 503231011 - 2¹¹ = 503228963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503231051) 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, 928200 + ... + 928741.

It is an arithmetic number, because the mean of its divisors is an integer number (126272056).

Almost surely, 2^503231011 is an apocalyptic number.

503231011 is a deficient number, since it is larger than the sum of its proper divisors (1857213).

503231011 is a wasteful number, since it uses less digits than its factorization.

503231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857212.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 503231011 is about 22432.8110365152. The cubic root of 503231011 is about 795.4064933312.

Adding to 503231011 its reverse (110132305), we get a palindrome (613363316).

The spelling of 503231011 in words is "five hundred three million, two hundred thirty-one thousand, eleven".