20431206043 has 2 divisors, whose sum is σ = 20431206044. Its totient is φ = 20431206042.

The previous prime is 20431206011. The next prime is 20431206071. The reversal of 20431206043 is 34060213402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20431206043 - 2⁵ = 20431206011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20431205999 and 20431206017.

It is not a weakly prime, because it can be changed into another prime (20431206443) 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, 10215603021 + 10215603022.

It is an arithmetic number, because the mean of its divisors is an integer number (10215603022).

Almost surely, 2^20431206043 is an apocalyptic number.

20431206043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20431206043 is an equidigital number, since it uses as much as digits as its factorization.

20431206043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20431206043 its reverse (34060213402), we get a palindrome (54491419445).

The spelling of 20431206043 in words is "twenty billion, four hundred thirty-one million, two hundred six thousand, forty-three".