531505453013 has 2 divisors, whose sum is σ = 531505453014. Its totient is φ = 531505453012.

The previous prime is 531505452979. The next prime is 531505453069. The reversal of 531505453013 is 310354505135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409904696644 + 121600756369 = 640238^2 + 348713^2 .

It is a cyclic number.

It is not a de Polignac number, because 531505453013 - 2¹² = 531505448917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531505453813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265752726506 + 265752726507.

It is an arithmetic number, because the mean of its divisors is an integer number (265752726507).

Almost surely, 2^531505453013 is an apocalyptic number.

It is an amenable number.

531505453013 is a deficient number, since it is larger than the sum of its proper divisors (1).

531505453013 is an equidigital number, since it uses as much as digits as its factorization.

531505453013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67500, while the sum is 35.

Adding to 531505453013 its reverse (310354505135), we get a palindrome (841859958148).

The spelling of 531505453013 in words is "five hundred thirty-one billion, five hundred five million, four hundred fifty-three thousand, thirteen".