531445323213 has 96 divisors (see below), whose sum is σ = 942743273472. Its totient is φ = 292761734400.

The previous prime is 531445323137. The next prime is 531445323281. The reversal of 531445323213 is 312323544135.

531445323213 is a `hidden beast` number, since 5 + 314 + 4 + 5 + 323 + 2 + 13 = 666.

It is not a de Polignac number, because 531445323213 - 2¹⁷ = 531445192141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531445323313) 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 in 95 ways as a sum of consecutive naturals, for example, 13849093 + ... + 13887413.

It is an arithmetic number, because the mean of its divisors is an integer number (9820242432).

Almost surely, 2^531445323213 is an apocalyptic number.

It is an amenable number.

531445323213 is a deficient number, since it is larger than the sum of its proper divisors (411297950259).

531445323213 is a wasteful number, since it uses less digits than its factorization.

531445323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38637 (or 38625 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

Adding to 531445323213 its reverse (312323544135), we get a palindrome (843768867348).

The spelling of 531445323213 in words is "five hundred thirty-one billion, four hundred forty-five million, three hundred twenty-three thousand, two hundred thirteen".