531400513993 has 2 divisors, whose sum is σ = 531400513994. Its totient is φ = 531400513992.

The previous prime is 531400513949. The next prime is 531400514009. The reversal of 531400513993 is 399315004135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 448863820729 + 82536693264 = 669973^2 + 287292^2 .

It is a cyclic number.

It is not a de Polignac number, because 531400513993 - 2⁹ = 531400513481 is a prime.

It is not a weakly prime, because it can be changed into another prime (531400553993) 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 as a sum of consecutive naturals, namely, 265700256996 + 265700256997.

It is an arithmetic number, because the mean of its divisors is an integer number (265700256997).

Almost surely, 2^531400513993 is an apocalyptic number.

It is an amenable number.

531400513993 is a deficient number, since it is larger than the sum of its proper divisors (1).

531400513993 is an equidigital number, since it uses as much as digits as its factorization.

531400513993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 218700, while the sum is 43.

The spelling of 531400513993 in words is "five hundred thirty-one billion, four hundred million, five hundred thirteen thousand, nine hundred ninety-three".