31542105593 has 2 divisors, whose sum is σ = 31542105594. Its totient is φ = 31542105592.

The previous prime is 31542105533. The next prime is 31542105611. The reversal of 31542105593 is 39550124513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31398776809 + 143328784 = 177197^2 + 11972^2 .

It is a cyclic number.

It is not a de Polignac number, because 31542105593 - 2¹⁰ = 31542104569 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31542105533) 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, 15771052796 + 15771052797.

It is an arithmetic number, because the mean of its divisors is an integer number (15771052797).

Almost surely, 2^31542105593 is an apocalyptic number.

It is an amenable number.

31542105593 is a deficient number, since it is larger than the sum of its proper divisors (1).

31542105593 is an equidigital number, since it uses as much as digits as its factorization.

31542105593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 31542105593 in words is "thirty-one billion, five hundred forty-two million, one hundred five thousand, five hundred ninety-three".