31542135271 has 2 divisors, whose sum is σ = 31542135272. Its totient is φ = 31542135270.

The previous prime is 31542135227. The next prime is 31542135299. The reversal of 31542135271 is 17253124513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31542135271 - 2¹¹ = 31542133223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31542135571) 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 as a sum of consecutive naturals, namely, 15771067635 + 15771067636.

It is an arithmetic number, because the mean of its divisors is an integer number (15771067636).

Almost surely, 2^31542135271 is an apocalyptic number.

31542135271 is a deficient number, since it is larger than the sum of its proper divisors (1).

31542135271 is an equidigital number, since it uses as much as digits as its factorization.

31542135271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

Adding to 31542135271 its reverse (17253124513), we get a palindrome (48795259784).

The spelling of 31542135271 in words is "thirty-one billion, five hundred forty-two million, one hundred thirty-five thousand, two hundred seventy-one".