143312209 has 2 divisors, whose sum is σ = 143312210. Its totient is φ = 143312208.

The previous prime is 143312207. The next prime is 143312237. The reversal of 143312209 is 902213341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94031809 + 49280400 = 9697^2 + 7020^2 .

It is a cyclic number.

It is not a de Polignac number, because 143312209 - 2¹ = 143312207 is a prime.

Together with 143312207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (143312207) 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, 71656104 + 71656105.

It is an arithmetic number, because the mean of its divisors is an integer number (71656105).

Almost surely, 2^143312209 is an apocalyptic number.

It is an amenable number.

143312209 is a deficient number, since it is larger than the sum of its proper divisors (1).

143312209 is an equidigital number, since it uses as much as digits as its factorization.

143312209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 143312209 is about 11971.3077397584. The cubic root of 143312209 is about 523.3124456032.

The spelling of 143312209 in words is "one hundred forty-three million, three hundred twelve thousand, two hundred nine".