144331424 has 24 divisors (see below), whose sum is σ = 286972308. Its totient is φ = 71449600.

The previous prime is 144331409. The next prime is 144331433. The reversal of 144331424 is 424133441.

It can be written as a sum of positive squares in 2 ways, for example, as 131515024 + 12816400 = 11468^2 + 3580^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144331393 and 144331402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19097 + ... + 25560.

Almost surely, 2^144331424 is an apocalyptic number.

It is an amenable number.

144331424 is a deficient number, since it is larger than the sum of its proper divisors (142640884).

144331424 is a wasteful number, since it uses less digits than its factorization.

144331424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44768 (or 44760 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 144331424 is about 12013.8013967270. The cubic root of 144331424 is about 524.5500895304.

Adding to 144331424 its reverse (424133441), we get a palindrome (568464865).

The spelling of 144331424 in words is "one hundred forty-four million, three hundred thirty-one thousand, four hundred twenty-four".