231532555073 has 2 divisors, whose sum is σ = 231532555074. Its totient is φ = 231532555072.

The previous prime is 231532555027. The next prime is 231532555091. The reversal of 231532555073 is 370555235132.

231532555073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187603329424 + 43929225649 = 433132^2 + 209593^2 .

It is a cyclic number.

It is not a de Polignac number, because 231532555073 - 2¹⁰ = 231532554049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 231532555073.

It is not a weakly prime, because it can be changed into another prime (231532558073) 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, 115766277536 + 115766277537.

It is an arithmetic number, because the mean of its divisors is an integer number (115766277537).

Almost surely, 2^231532555073 is an apocalyptic number.

It is an amenable number.

231532555073 is a deficient number, since it is larger than the sum of its proper divisors (1).

231532555073 is an equidigital number, since it uses as much as digits as its factorization.

231532555073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472500, while the sum is 41.

The spelling of 231532555073 in words is "two hundred thirty-one billion, five hundred thirty-two million, five hundred fifty-five thousand, seventy-three".