144131209 has 2 divisors, whose sum is σ = 144131210. Its totient is φ = 144131208.

The previous prime is 144131201. The next prime is 144131213. The reversal of 144131209 is 902131441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131171209 + 12960000 = 11453^2 + 3600^2 .

It is an emirp because it is prime and its reverse (902131441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144131209 - 2³ = 144131201 is a prime.

It is not a weakly prime, because it can be changed into another prime (144131201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72065604 + 72065605.

It is an arithmetic number, because the mean of its divisors is an integer number (72065605).

Almost surely, 2^144131209 is an apocalyptic number.

It is an amenable number.

144131209 is a deficient number, since it is larger than the sum of its proper divisors (1).

144131209 is an equidigital number, since it uses as much as digits as its factorization.

144131209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 144131209 is about 12005.4657968777. The cubic root of 144131209 is about 524.3074272076.

The spelling of 144131209 in words is "one hundred forty-four million, one hundred thirty-one thousand, two hundred nine".