201344009 has 2 divisors, whose sum is σ = 201344010. Its totient is φ = 201344008.

The previous prime is 201343999. The next prime is 201344027. The reversal of 201344009 is 900443102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124255609 + 77088400 = 11147^2 + 8780^2 .

It is a cyclic number.

It is not a de Polignac number, because 201344009 - 2⁴ = 201343993 is a prime.

It is not a weakly prime, because it can be changed into another prime (201344089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100672004 + 100672005.

It is an arithmetic number, because the mean of its divisors is an integer number (100672005).

Almost surely, 2^201344009 is an apocalyptic number.

It is an amenable number.

201344009 is a deficient number, since it is larger than the sum of its proper divisors (1).

201344009 is an equidigital number, since it uses as much as digits as its factorization.

201344009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 201344009 is about 14189.5739541397. The cubic root of 201344009 is about 586.1105929179.

The spelling of 201344009 in words is "two hundred one million, three hundred forty-four thousand, nine".