531243512413 has 2 divisors, whose sum is σ = 531243512414. Its totient is φ = 531243512412.

The previous prime is 531243512363. The next prime is 531243512419. The reversal of 531243512413 is 314215342135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 525049507609 + 6194004804 = 724603^2 + 78702^2 .

It is a cyclic number.

It is not a de Polignac number, because 531243512413 - 2⁹ = 531243511901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531243512419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265621756206 + 265621756207.

It is an arithmetic number, because the mean of its divisors is an integer number (265621756207).

Almost surely, 2^531243512413 is an apocalyptic number.

It is an amenable number.

531243512413 is a deficient number, since it is larger than the sum of its proper divisors (1).

531243512413 is an equidigital number, since it uses as much as digits as its factorization.

531243512413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 34.

Adding to 531243512413 its reverse (314215342135), we get a palindrome (845458854548).

The spelling of 531243512413 in words is "five hundred thirty-one billion, two hundred forty-three million, five hundred twelve thousand, four hundred thirteen".