531355315513 has 16 divisors (see below), whose sum is σ = 585366912000. Its totient is φ = 478296078480.

The previous prime is 531355315511. The next prime is 531355315549. The reversal of 531355315513 is 315513553135.

It is not a de Polignac number, because 531355315513 - 2¹ = 531355315511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531355315511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9715398 + ... + 9769936.

It is an arithmetic number, because the mean of its divisors is an integer number (36585432000).

Almost surely, 2^531355315513 is an apocalyptic number.

It is an amenable number.

531355315513 is a deficient number, since it is larger than the sum of its proper divisors (54011596487).

531355315513 is a wasteful number, since it uses less digits than its factorization.

531355315513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63252.

The product of its digits is 253125, while the sum is 40.

Adding to 531355315513 its reverse (315513553135), we get a palindrome (846868868648).

The spelling of 531355315513 in words is "five hundred thirty-one billion, three hundred fifty-five million, three hundred fifteen thousand, five hundred thirteen".