143688173 has 2 divisors, whose sum is σ = 143688174. Its totient is φ = 143688172.

The previous prime is 143688161. The next prime is 143688191. The reversal of 143688173 is 371886341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143688169 + 4 = 11987^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 143688173 - 2⁴ = 143688157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143688173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143688113) 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, 71844086 + 71844087.

It is an arithmetic number, because the mean of its divisors is an integer number (71844087).

Almost surely, 2^143688173 is an apocalyptic number.

It is an amenable number.

143688173 is a deficient number, since it is larger than the sum of its proper divisors (1).

143688173 is an equidigital number, since it uses as much as digits as its factorization.

143688173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 143688173 is about 11987.0001668474. Note that the first 3 decimals coincide. The cubic root of 143688173 is about 523.7696637848.

The spelling of 143688173 in words is "one hundred forty-three million, six hundred eighty-eight thousand, one hundred seventy-three".