531241202321 has 8 divisors (see below), whose sum is σ = 564412834920. Its totient is φ = 499059767808.

The previous prime is 531241202293. The next prime is 531241202341. The reversal of 531241202321 is 123202142135.

It can be written as a sum of positive squares in 4 ways, for example, as 96612180625 + 434629021696 = 310825^2 + 659264^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 531241202321 - 2³⁰ = 530167460497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531241202341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247548416 + ... + 247550561.

It is an arithmetic number, because the mean of its divisors is an integer number (70551604365).

Almost surely, 2^531241202321 is an apocalyptic number.

It is an amenable number.

531241202321 is a deficient number, since it is larger than the sum of its proper divisors (33171632599).

531241202321 is a wasteful number, since it uses less digits than its factorization.

531241202321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495099043.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 531241202321 its reverse (123202142135), we get a palindrome (654443344456).

The spelling of 531241202321 in words is "five hundred thirty-one billion, two hundred forty-one million, two hundred two thousand, three hundred twenty-one".