20431534514273 has 2 divisors, whose sum is σ = 20431534514274. Its totient is φ = 20431534514272.

The previous prime is 20431534514231. The next prime is 20431534514291. The reversal of 20431534514273 is 37241543513402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20275721162449 + 155813351824 = 4502857^2 + 394732^2 .

It is a cyclic number.

It is not a de Polignac number, because 20431534514273 - 2¹⁰ = 20431534513249 is a prime.

It is not a weakly prime, because it can be changed into another prime (20431534514173) 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, 10215767257136 + 10215767257137.

It is an arithmetic number, because the mean of its divisors is an integer number (10215767257137).

Almost surely, 2^{20431534514273} is an apocalyptic number.

It is an amenable number.

20431534514273 is a deficient number, since it is larger than the sum of its proper divisors (1).

20431534514273 is an equidigital number, since it uses as much as digits as its factorization.

20431534514273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 44.

The spelling of 20431534514273 in words is "twenty trillion, four hundred thirty-one billion, five hundred thirty-four million, five hundred fourteen thousand, two hundred seventy-three".