20431343411203 has 2 divisors, whose sum is σ = 20431343411204. Its totient is φ = 20431343411202.

The previous prime is 20431343411191. The next prime is 20431343411221. The reversal of 20431343411203 is 30211434313402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20431343411203 - 2⁹ = 20431343410691 is a prime.

It is not a weakly prime, because it can be changed into another prime (20431343411293) 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, 10215671705601 + 10215671705602.

It is an arithmetic number, because the mean of its divisors is an integer number (10215671705602).

Almost surely, 2^{20431343411203} is an apocalyptic number.

20431343411203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20431343411203 is an equidigital number, since it uses as much as digits as its factorization.

20431343411203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 20431343411203 its reverse (30211434313402), we get a palindrome (50642777724605).

The spelling of 20431343411203 in words is "twenty trillion, four hundred thirty-one billion, three hundred forty-three million, four hundred eleven thousand, two hundred three".