531305216463 has 32 divisors (see below), whose sum is σ = 814904035840. Its totient is φ = 301617613440.

The previous prime is 531305216461. The next prime is 531305216471. The reversal of 531305216463 is 364612503135.

It is not a de Polignac number, because 531305216463 - 2¹ = 531305216461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531305216461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27747873 + ... + 27767013.

It is an arithmetic number, because the mean of its divisors is an integer number (25465751120).

Almost surely, 2^531305216463 is an apocalyptic number.

531305216463 is a deficient number, since it is larger than the sum of its proper divisors (283598819377).

531305216463 is a wasteful number, since it uses less digits than its factorization.

531305216463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27727.

The product of its (nonzero) digits is 194400, while the sum is 39.

Adding to 531305216463 its reverse (364612503135), we get a palindrome (895917719598).

The spelling of 531305216463 in words is "five hundred thirty-one billion, three hundred five million, two hundred sixteen thousand, four hundred sixty-three".