20303442001 has 2 divisors, whose sum is σ = 20303442002. Its totient is φ = 20303442000.

The previous prime is 20303441987. The next prime is 20303442011. The reversal of 20303442001 is 10024430302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16275635776 + 4027806225 = 127576^2 + 63465^2 .

It is a cyclic number.

It is not a de Polignac number, because 20303442001 - 2⁹ = 20303441489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20303442001.

It is not a weakly prime, because it can be changed into another prime (20303442011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151721000 + 10151721001.

It is an arithmetic number, because the mean of its divisors is an integer number (10151721001).

Almost surely, 2^20303442001 is an apocalyptic number.

It is an amenable number.

20303442001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20303442001 is an equidigital number, since it uses as much as digits as its factorization.

20303442001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20303442001 its reverse (10024430302), we get a palindrome (30327872303).

The spelling of 20303442001 in words is "twenty billion, three hundred three million, four hundred forty-two thousand, one".