144263281 has 2 divisors, whose sum is σ = 144263282. Its totient is φ = 144263280.

The previous prime is 144263263. The next prime is 144263293. The reversal of 144263281 is 182362441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114832656 + 29430625 = 10716^2 + 5425^2 .

It is a cyclic number.

It is not a de Polignac number, because 144263281 - 2¹¹ = 144261233 is a prime.

It is a super-2 number, since 2×144263281² = 41623788489769922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (144263681) 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, 72131640 + 72131641.

It is an arithmetic number, because the mean of its divisors is an integer number (72131641).

Almost surely, 2^144263281 is an apocalyptic number.

It is an amenable number.

144263281 is a deficient number, since it is larger than the sum of its proper divisors (1).

144263281 is an equidigital number, since it uses as much as digits as its factorization.

144263281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 31.

The square root of 144263281 is about 12010.9650320030. The cubic root of 144263281 is about 524.4675248272.

The spelling of 144263281 in words is "one hundred forty-four million, two hundred sixty-three thousand, two hundred eighty-one".