503215231 has 4 divisors (see below), whose sum is σ = 512709912. Its totient is φ = 493720552.

The previous prime is 503215213. The next prime is 503215241. The reversal of 503215231 is 132512305.

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 503215231 - 2⁵ = 503215199 is a prime.

It is a super-2 number, since 2×503215231² = 506451137420766722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503215241) 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, 4747261 + ... + 4747366.

It is an arithmetic number, because the mean of its divisors is an integer number (128177478).

Almost surely, 2^503215231 is an apocalyptic number.

503215231 is a deficient number, since it is larger than the sum of its proper divisors (9494681).

503215231 is an equidigital number, since it uses as much as digits as its factorization.

503215231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9494680.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 503215231 is about 22432.4593168025. The cubic root of 503215231 is about 795.3981792929.

Adding to 503215231 its reverse (132512305), we get a palindrome (635727536).

The spelling of 503215231 in words is "five hundred three million, two hundred fifteen thousand, two hundred thirty-one".