201342441173 has 2 divisors, whose sum is σ = 201342441174. Its totient is φ = 201342441172.

The previous prime is 201342441137. The next prime is 201342441247. The reversal of 201342441173 is 371144243102.

Together with previous prime (201342441137) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200769413329 + 573027844 = 448073^2 + 23938^2 .

It is a cyclic number.

It is not a de Polignac number, because 201342441173 - 2⁶ = 201342441109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201342441103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100671220586 + 100671220587.

It is an arithmetic number, because the mean of its divisors is an integer number (100671220587).

Almost surely, 2^201342441173 is an apocalyptic number.

It is an amenable number.

201342441173 is a deficient number, since it is larger than the sum of its proper divisors (1).

201342441173 is an equidigital number, since it uses as much as digits as its factorization.

201342441173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

Adding to 201342441173 its reverse (371144243102), we get a palindrome (572486684275).

The spelling of 201342441173 in words is "two hundred one billion, three hundred forty-two million, four hundred forty-one thousand, one hundred seventy-three".