143105689 has 2 divisors, whose sum is σ = 143105690. Its totient is φ = 143105688.

The previous prime is 143105653. The next prime is 143105707. The reversal of 143105689 is 986501341.

143105689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126945289 + 16160400 = 11267^2 + 4020^2 .

It is a cyclic number.

It is not a de Polignac number, because 143105689 - 2¹¹ = 143103641 is a prime.

It is equal to p_8077735 and since 143105689 and 8077735 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (143105639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71552844 + 71552845.

It is an arithmetic number, because the mean of its divisors is an integer number (71552845).

Almost surely, 2^143105689 is an apocalyptic number.

It is an amenable number.

143105689 is a deficient number, since it is larger than the sum of its proper divisors (1).

143105689 is an equidigital number, since it uses as much as digits as its factorization.

143105689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 143105689 is about 11962.6790059752. The cubic root of 143105689 is about 523.0609516977.

The spelling of 143105689 in words is "one hundred forty-three million, one hundred five thousand, six hundred eighty-nine".