531124336513 has 4 divisors (see below), whose sum is σ = 531167006128. Its totient is φ = 531081666900.

The previous prime is 531124336499. The next prime is 531124336573. The reversal of 531124336513 is 315633421135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531124336513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531124336573) 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, 21316131 + ... + 21341032.

It is an arithmetic number, because the mean of its divisors is an integer number (132791751532).

Almost surely, 2^531124336513 is an apocalyptic number.

It is an amenable number.

531124336513 is a deficient number, since it is larger than the sum of its proper divisors (42669615).

531124336513 is a wasteful number, since it uses less digits than its factorization.

531124336513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42669614.

The product of its digits is 97200, while the sum is 37.

Adding to 531124336513 its reverse (315633421135), we get a palindrome (846757757648).

The spelling of 531124336513 in words is "five hundred thirty-one billion, one hundred twenty-four million, three hundred thirty-six thousand, five hundred thirteen".