144281281 has 4 divisors (see below), whose sum is σ = 144372672. Its totient is φ = 144189892.

The previous prime is 144281257. The next prime is 144281299. The reversal of 144281281 is 182182441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144281281 - 2⁹ = 144280769 is a prime.

It is a super-3 number, since 3×144281281³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144281201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43285 + ... + 46498.

It is an arithmetic number, because the mean of its divisors is an integer number (36093168).

Almost surely, 2^144281281 is an apocalyptic number.

It is an amenable number.

144281281 is a deficient number, since it is larger than the sum of its proper divisors (91391).

144281281 is an equidigital number, since it uses as much as digits as its factorization.

144281281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91390.

The product of its digits is 4096, while the sum is 31.

The square root of 144281281 is about 12011.7143239423. The cubic root of 144281281 is about 524.4893368522.

The spelling of 144281281 in words is "one hundred forty-four million, two hundred eighty-one thousand, two hundred eighty-one".