503212106503 has 4 divisors (see below), whose sum is σ = 503266925848. Its totient is φ = 503157287160.

The previous prime is 503212106489. The next prime is 503212106519. The reversal of 503212106503 is 305601212305.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503212106503 is a prime.

It is a super-2 number, since 2×503212106503² (a number of 24 digits) 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 (503212106563) 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, 27395901 + ... + 27414262.

It is an arithmetic number, because the mean of its divisors is an integer number (125816731462).

Almost surely, 2^503212106503 is an apocalyptic number.

503212106503 is a deficient number, since it is larger than the sum of its proper divisors (54819345).

503212106503 is an equidigital number, since it uses as much as digits as its factorization.

503212106503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54819344.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 503212106503 its reverse (305601212305), we get a palindrome (808813318808).

The spelling of 503212106503 in words is "five hundred three billion, two hundred twelve million, one hundred six thousand, five hundred three".