143318971 has 2 divisors, whose sum is σ = 143318972. Its totient is φ = 143318970.

The previous prime is 143318953. The next prime is 143319017. The reversal of 143318971 is 179813341.

It is a weak prime.

It is an emirp because it is prime and its reverse (179813341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143318971 - 2⁵ = 143318939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143318971.

It is not a weakly prime, because it can be changed into another prime (143318941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71659485 + 71659486.

It is an arithmetic number, because the mean of its divisors is an integer number (71659486).

Almost surely, 2^143318971 is an apocalyptic number.

143318971 is a deficient number, since it is larger than the sum of its proper divisors (1).

143318971 is an equidigital number, since it uses as much as digits as its factorization.

143318971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 143318971 is about 11971.5901617120. The cubic root of 143318971 is about 523.3206760792.

The spelling of 143318971 in words is "one hundred forty-three million, three hundred eighteen thousand, nine hundred seventy-one".