531315230553 has 12 divisors (see below), whose sum is σ = 767461654180. Its totient is φ = 354207236256.

The previous prime is 531315230549. The next prime is 531315230657. The reversal of 531315230553 is 355032513135.

531315230553 is a `hidden beast` number, since 5 + 31 + 315 + 2 + 305 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 157949015184 + 373366215369 = 397428^2 + 611037^2 .

It is not a de Polignac number, because 531315230553 - 2² = 531315230549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531315230753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1985475 + ... + 2237127.

Almost surely, 2^531315230553 is an apocalyptic number.

It is an amenable number.

531315230553 is a deficient number, since it is larger than the sum of its proper divisors (236146423627).

531315230553 is a wasteful number, since it uses less digits than its factorization.

531315230553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486248 (or 486245 counting only the distinct ones).

The product of its (nonzero) digits is 101250, while the sum is 36.

Adding to 531315230553 its reverse (355032513135), we get a palindrome (886347743688).

The spelling of 531315230553 in words is "five hundred thirty-one billion, three hundred fifteen million, two hundred thirty thousand, five hundred fifty-three".