531245335133 has 4 divisors (see below), whose sum is σ = 531248635488. Its totient is φ = 531242034780.

The previous prime is 531245335123. The next prime is 531245335211. The reversal of 531245335133 is 331533542135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 331533542135 = 5 ⋅66306708427.

It is a cyclic number.

It is not a de Polignac number, because 531245335133 - 2¹² = 531245331037 is a prime.

It is a super-2 number, since 2×531245335133² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531245335123) 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 3 ways as a sum of consecutive naturals, for example, 1395641 + ... + 1735022.

It is an arithmetic number, because the mean of its divisors is an integer number (132812158872).

Almost surely, 2^531245335133 is an apocalyptic number.

It is an amenable number.

531245335133 is a deficient number, since it is larger than the sum of its proper divisors (3300355).

531245335133 is a wasteful number, since it uses less digits than its factorization.

531245335133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300354.

The product of its digits is 243000, while the sum is 38.

Adding to 531245335133 its reverse (331533542135), we get a palindrome (862778877268).

The spelling of 531245335133 in words is "five hundred thirty-one billion, two hundred forty-five million, three hundred thirty-five thousand, one hundred thirty-three".