531243512355 has 16 divisors (see below), whose sum is σ = 853058181024. Its totient is φ = 282307019520.

The previous prime is 531243512353. The next prime is 531243512363. The reversal of 531243512355 is 553215342135.

It is not a de Polignac number, because 531243512355 - 2¹ = 531243512353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531243512353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63924066 + ... + 63932375.

It is an arithmetic number, because the mean of its divisors is an integer number (53316136314).

Almost surely, 2^531243512355 is an apocalyptic number.

531243512355 is a deficient number, since it is larger than the sum of its proper divisors (321814668669).

531243512355 is a wasteful number, since it uses less digits than its factorization.

531243512355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127856726.

The product of its digits is 270000, while the sum is 39.

The spelling of 531243512355 in words is "five hundred thirty-one billion, two hundred forty-three million, five hundred twelve thousand, three hundred fifty-five".