531323030321 has 16 divisors (see below), whose sum is σ = 554708574720. Its totient is φ = 508329613440.

The previous prime is 531323030299. The next prime is 531323030333. The reversal of 531323030321 is 123030323135.

It is a cyclic number.

It is not a de Polignac number, because 531323030321 - 2³⁸ = 256445123377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531323030621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28317275 + ... + 28336031.

It is an arithmetic number, because the mean of its divisors is an integer number (34669285920).

Almost surely, 2^531323030321 is an apocalyptic number.

It is an amenable number.

531323030321 is a deficient number, since it is larger than the sum of its proper divisors (23385544399).

531323030321 is a wasteful number, since it uses less digits than its factorization.

531323030321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29144.

The product of its (nonzero) digits is 4860, while the sum is 26.

Adding to 531323030321 its reverse (123030323135), we get a palindrome (654353353456).

The spelling of 531323030321 in words is "five hundred thirty-one billion, three hundred twenty-three million, thirty thousand, three hundred twenty-one".