201434209 has 2 divisors, whose sum is σ = 201434210. Its totient is φ = 201434208.

The previous prime is 201434197. The next prime is 201434221. The reversal of 201434209 is 902434102.

It is a balanced prime because it is at equal distance from previous prime (201434197) and next prime (201434221).

It can be written as a sum of positive squares in only one way, i.e., 157251600 + 44182609 = 12540^2 + 6647^2 .

It is a cyclic number.

It is not a de Polignac number, because 201434209 - 2¹⁹ = 200909921 is a prime.

It is not a weakly prime, because it can be changed into another prime (201434239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100717104 + 100717105.

It is an arithmetic number, because the mean of its divisors is an integer number (100717105).

Almost surely, 2^201434209 is an apocalyptic number.

It is an amenable number.

201434209 is a deficient number, since it is larger than the sum of its proper divisors (1).

201434209 is an equidigital number, since it uses as much as digits as its factorization.

201434209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 201434209 is about 14192.7519882509. The cubic root of 201434209 is about 586.1981036465.

The spelling of 201434209 in words is "two hundred one million, four hundred thirty-four thousand, two hundred nine".