144240231 has 8 divisors (see below), whose sum is σ = 192401920. Its totient is φ = 96119352.

The previous prime is 144240209. The next prime is 144240247. The reversal of 144240231 is 132042441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144240231 - 2¹⁷ = 144109159 is a prime.

It is a super-2 number, since 2×144240231² = 41610488477866722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144240198 and 144240207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144240251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685 + ... + 16998.

It is an arithmetic number, because the mean of its divisors is an integer number (24050240).

Almost surely, 2^144240231 is an apocalyptic number.

144240231 is a deficient number, since it is larger than the sum of its proper divisors (48161689).

144240231 is a wasteful number, since it uses less digits than its factorization.

144240231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20405.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 144240231 is about 12010.0054537873. The cubic root of 144240231 is about 524.4395906681.

Adding to 144240231 its reverse (132042441), we get a palindrome (276282672).

The spelling of 144240231 in words is "one hundred forty-four million, two hundred forty thousand, two hundred thirty-one".