144431320273 has 2 divisors, whose sum is σ = 144431320274. Its totient is φ = 144431320272.

The previous prime is 144431320219. The next prime is 144431320291. The reversal of 144431320273 is 372023134441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143817668289 + 613651984 = 379233^2 + 24772^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144431320273 is a prime.

It is not a weakly prime, because it can be changed into another prime (144431320573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72215660136 + 72215660137.

It is an arithmetic number, because the mean of its divisors is an integer number (72215660137).

Almost surely, 2^144431320273 is an apocalyptic number.

It is an amenable number.

144431320273 is a deficient number, since it is larger than the sum of its proper divisors (1).

144431320273 is an equidigital number, since it uses as much as digits as its factorization.

144431320273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 34.

The spelling of 144431320273 in words is "one hundred forty-four billion, four hundred thirty-one million, three hundred twenty thousand, two hundred seventy-three".