531313563 has 16 divisors (see below), whose sum is σ = 818280576. Its totient is φ = 303066240.

The previous prime is 531313513. The next prime is 531313567. The reversal of 531313563 is 365313135.

It is not a de Polignac number, because 531313563 - 2¹⁰ = 531312539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 531313563.

It is not an unprimeable number, because it can be changed into a prime (531313567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472981 + ... + 474102.

It is an arithmetic number, because the mean of its divisors is an integer number (51142536).

Almost surely, 2^531313563 is an apocalyptic number.

531313563 is a deficient number, since it is larger than the sum of its proper divisors (286967013).

531313563 is a wasteful number, since it uses less digits than its factorization.

531313563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947114.

The product of its digits is 12150, while the sum is 30.

The square root of 531313563 is about 23050.2399770588. The cubic root of 531313563 is about 809.9352501206.

Adding to 531313563 its reverse (365313135), we get a palindrome (896626698).

The spelling of 531313563 in words is "five hundred thirty-one million, three hundred thirteen thousand, five hundred sixty-three".