531321305053 has 16 divisors (see below), whose sum is σ = 662708551680. Its totient is φ = 413840358000.

The previous prime is 531321304883. The next prime is 531321305059. The reversal of 531321305053 is 350503123135.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531321305053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531321305059) 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, 1286493 + ... + 1648546.

It is an arithmetic number, because the mean of its divisors is an integer number (41419284480).

Almost surely, 2^531321305053 is an apocalyptic number.

It is an amenable number.

531321305053 is a deficient number, since it is larger than the sum of its proper divisors (131387246627).

531321305053 is a wasteful number, since it uses less digits than its factorization.

531321305053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2937408.

The product of its (nonzero) digits is 20250, while the sum is 31.

Adding to 531321305053 its reverse (350503123135), we get a palindrome (881824428188).

The spelling of 531321305053 in words is "five hundred thirty-one billion, three hundred twenty-one million, three hundred five thousand, fifty-three".