531688047713 has 2 divisors, whose sum is σ = 531688047714. Its totient is φ = 531688047712.

The previous prime is 531688047647. The next prime is 531688047733. The reversal of 531688047713 is 317740886135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354099973969 + 177588073744 = 595063^2 + 421412^2 .

It is a cyclic number.

It is not a de Polignac number, because 531688047713 - 2²⁸ = 531419612257 is a prime.

It is a super-2 number, since 2×531688047713² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (531688047733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265844023856 + 265844023857.

It is an arithmetic number, because the mean of its divisors is an integer number (265844023857).

Almost surely, 2^531688047713 is an apocalyptic number.

It is an amenable number.

531688047713 is a deficient number, since it is larger than the sum of its proper divisors (1).

531688047713 is an equidigital number, since it uses as much as digits as its factorization.

531688047713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 531688047713 in words is "five hundred thirty-one billion, six hundred eighty-eight million, forty-seven thousand, seven hundred thirteen".