531363115503 has 40 divisors (see below), whose sum is σ = 866106424656. Its totient is φ = 321970809600.

The previous prime is 531363115483. The next prime is 531363115513. The reversal of 531363115503 is 305511363135.

531363115503 is a `hidden beast` number, since 5 + 3 + 1 + 3 + 631 + 15 + 5 + 0 + 3 = 666.

It is not a de Polignac number, because 531363115503 - 2¹⁰ = 531363114479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531363115513) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4370983 + ... + 4490903.

Almost surely, 2^531363115503 is an apocalyptic number.

531363115503 is a deficient number, since it is larger than the sum of its proper divisors (334743309153).

531363115503 is a wasteful number, since it uses less digits than its factorization.

531363115503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124917 (or 124908 counting only the distinct ones).

The product of its (nonzero) digits is 60750, while the sum is 36.

Adding to 531363115503 its reverse (305511363135), we get a palindrome (836874478638).

The spelling of 531363115503 in words is "five hundred thirty-one billion, three hundred sixty-three million, one hundred fifteen thousand, five hundred three".