143112209 has 2 divisors, whose sum is σ = 143112210. Its totient is φ = 143112208.

The previous prime is 143112197. The next prime is 143112259. The reversal of 143112209 is 902211341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101445184 + 41667025 = 10072^2 + 6455^2 .

It is a cyclic number.

It is not a de Polignac number, because 143112209 - 2⁸ = 143111953 is a prime.

It is a super-2 number, since 2×143112209² = 40962208729719362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (143112259) 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, 71556104 + 71556105.

It is an arithmetic number, because the mean of its divisors is an integer number (71556105).

Almost surely, 2^143112209 is an apocalyptic number.

It is an amenable number.

143112209 is a deficient number, since it is larger than the sum of its proper divisors (1).

143112209 is an equidigital number, since it uses as much as digits as its factorization.

143112209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 143112209 is about 11962.9515170797. The cubic root of 143112209 is about 523.0688952571.

The spelling of 143112209 in words is "one hundred forty-three million, one hundred twelve thousand, two hundred nine".