2013123330173 has 2 divisors, whose sum is σ = 2013123330174. Its totient is φ = 2013123330172.

The previous prime is 2013123330167. The next prime is 2013123330187. The reversal of 2013123330173 is 3710333213102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1983877884004 + 29245446169 = 1408502^2 + 171013^2 .

It is a cyclic number.

It is not a de Polignac number, because 2013123330173 - 2¹⁶ = 2013123264637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2013123330193) 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, 1006561665086 + 1006561665087.

It is an arithmetic number, because the mean of its divisors is an integer number (1006561665087).

Almost surely, 2^{2013123330173} is an apocalyptic number.

It is an amenable number.

2013123330173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2013123330173 is an equidigital number, since it uses as much as digits as its factorization.

2013123330173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 29.

Adding to 2013123330173 its reverse (3710333213102), we get a palindrome (5723456543275).

The spelling of 2013123330173 in words is "two trillion, thirteen billion, one hundred twenty-three million, three hundred thirty thousand, one hundred seventy-three".