531540213 has 8 divisors (see below), whose sum is σ = 711336576. Its totient is φ = 353052000.

The previous prime is 531540197. The next prime is 531540221. The reversal of 531540213 is 312045135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 531540213 - 2⁴ = 531540197 is a prime.

It is a super-3 number, since 3×531540213³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531540223) 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 7 ways as a sum of consecutive naturals, for example, 326088 + ... + 327713.

It is an arithmetic number, because the mean of its divisors is an integer number (88917072).

Almost surely, 2^531540213 is an apocalyptic number.

It is an amenable number.

531540213 is a deficient number, since it is larger than the sum of its proper divisors (179796363).

531540213 is a wasteful number, since it uses less digits than its factorization.

531540213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654075.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 531540213 is about 23055.1558875667. The cubic root of 531540213 is about 810.0504022897.

Adding to 531540213 its reverse (312045135), we get a palindrome (843585348).

The spelling of 531540213 in words is "five hundred thirty-one million, five hundred forty thousand, two hundred thirteen".