31452671971543 has 2 divisors, whose sum is σ = 31452671971544. Its totient is φ = 31452671971542.

The previous prime is 31452671971519. The next prime is 31452671971703. The reversal of 31452671971543 is 34517917625413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31452671971543 - 2³⁷ = 31315233018071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31452671971843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15726335985771 + 15726335985772.

It is an arithmetic number, because the mean of its divisors is an integer number (15726335985772).

Almost surely, 2^{31452671971543} is an apocalyptic number.

31452671971543 is a deficient number, since it is larger than the sum of its proper divisors (1).

31452671971543 is an equidigital number, since it uses as much as digits as its factorization.

31452671971543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19051200, while the sum is 58.

The spelling of 31452671971543 in words is "thirty-one trillion, four hundred fifty-two billion, six hundred seventy-one million, nine hundred seventy-one thousand, five hundred forty-three".