52431131321 has 12 divisors (see below), whose sum is σ = 53782638636. Its totient is φ = 51112817280.

The previous prime is 52431131309. The next prime is 52431131359. The reversal of 52431131321 is 12313113425.

It can be written as a sum of positive squares in 6 ways, for example, as 4824691600 + 47606439721 = 69460^2 + 218189^2 .

It is not a de Polignac number, because 52431131321 - 2⁶ = 52431131257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52431131371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2296655 + ... + 2319371.

It is an arithmetic number, because the mean of its divisors is an integer number (4481886553).

Almost surely, 2^52431131321 is an apocalyptic number.

It is an amenable number.

52431131321 is a deficient number, since it is larger than the sum of its proper divisors (1351507315).

52431131321 is a wasteful number, since it uses less digits than its factorization.

52431131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24172 (or 24131 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

Adding to 52431131321 its reverse (12313113425), we get a palindrome (64744244746).

The spelling of 52431131321 in words is "fifty-two billion, four hundred thirty-one million, one hundred thirty-one thousand, three hundred twenty-one".