143281129 has 2 divisors, whose sum is σ = 143281130. Its totient is φ = 143281128.

The previous prime is 143281123. The next prime is 143281139. The reversal of 143281129 is 921182341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93083904 + 50197225 = 9648^2 + 7085^2 .

It is a cyclic number.

It is not a de Polignac number, because 143281129 - 2⁷ = 143281001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143281129.

It is not a weakly prime, because it can be changed into another prime (143281123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71640564 + 71640565.

It is an arithmetic number, because the mean of its divisors is an integer number (71640565).

Almost surely, 2^143281129 is an apocalyptic number.

It is an amenable number.

143281129 is a deficient number, since it is larger than the sum of its proper divisors (1).

143281129 is an equidigital number, since it uses as much as digits as its factorization.

143281129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 31.

The square root of 143281129 is about 11970.0095655768. The cubic root of 143281129 is about 523.2746127560.

The spelling of 143281129 in words is "one hundred forty-three million, two hundred eighty-one thousand, one hundred twenty-nine".