144143309 has 2 divisors, whose sum is σ = 144143310. Its totient is φ = 144143308.

The previous prime is 144143299. The next prime is 144143327. The reversal of 144143309 is 903341441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132940900 + 11202409 = 11530^2 + 3347^2 .

It is an emirp because it is prime and its reverse (903341441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144143309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144143339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72071654 + 72071655.

It is an arithmetic number, because the mean of its divisors is an integer number (72071655).

Almost surely, 2^144143309 is an apocalyptic number.

It is an amenable number.

144143309 is a deficient number, since it is larger than the sum of its proper divisors (1).

144143309 is an equidigital number, since it uses as much as digits as its factorization.

144143309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 144143309 is about 12005.9697234334. The cubic root of 144143309 is about 524.3220988909.

The spelling of 144143309 in words is "one hundred forty-four million, one hundred forty-three thousand, three hundred nine".