201043423001 has 2 divisors, whose sum is σ = 201043423002. Its totient is φ = 201043423000.

The previous prime is 201043422971. The next prime is 201043423013. The reversal of 201043423001 is 100324340102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101866297225 + 99177125776 = 319165^2 + 314924^2 .

It is a cyclic number.

It is not a de Polignac number, because 201043423001 - 2³⁴ = 183863553817 is a prime.

It is not a weakly prime, because it can be changed into another prime (201043423901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100521711500 + 100521711501.

It is an arithmetic number, because the mean of its divisors is an integer number (100521711501).

Almost surely, 2^201043423001 is an apocalyptic number.

It is an amenable number.

201043423001 is a deficient number, since it is larger than the sum of its proper divisors (1).

201043423001 is an equidigital number, since it uses as much as digits as its factorization.

201043423001 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 20.

Adding to 201043423001 its reverse (100324340102), we get a palindrome (301367763103).

The spelling of 201043423001 in words is "two hundred one billion, forty-three million, four hundred twenty-three thousand, one".