20231322128263 has 2 divisors, whose sum is σ = 20231322128264. Its totient is φ = 20231322128262.

The previous prime is 20231322128249. The next prime is 20231322128273. The reversal of 20231322128263 is 36282122313202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20231322128263 - 2¹³ = 20231322120071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20231322128203) 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, 10115661064131 + 10115661064132.

It is an arithmetic number, because the mean of its divisors is an integer number (10115661064132).

Almost surely, 2^{20231322128263} is an apocalyptic number.

20231322128263 is a deficient number, since it is larger than the sum of its proper divisors (1).

20231322128263 is an equidigital number, since it uses as much as digits as its factorization.

20231322128263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 20231322128263 in words is "twenty trillion, two hundred thirty-one billion, three hundred twenty-two million, one hundred twenty-eight thousand, two hundred sixty-three".