213316503 has 12 divisors (see below), whose sum is σ = 290611320. Its totient is φ = 139180912.

The previous prime is 213316501. The next prime is 213316567. The reversal of 213316503 is 305613312.

It is a happy number.

It is not a de Polignac number, because 213316503 - 2¹ = 213316501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213316501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9468 + ... + 22721.

It is an arithmetic number, because the mean of its divisors is an integer number (24217610).

Almost surely, 2^213316503 is an apocalyptic number.

213316503 is a deficient number, since it is larger than the sum of its proper divisors (77294817).

213316503 is an equidigital number, since it uses as much as digits as its factorization.

213316503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32286 (or 32239 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 213316503 is about 14605.3587083645. The cubic root of 213316503 is about 597.5049192245.

Adding to 213316503 its reverse (305613312), we get a palindrome (518929815).

The spelling of 213316503 in words is "two hundred thirteen million, three hundred sixteen thousand, five hundred three".