144028531 has 24 divisors (see below), whose sum is σ = 160532064. Its totient is φ = 129029760.

The previous prime is 144028513. The next prime is 144028559. The reversal of 144028531 is 135820441.

It is not a de Polignac number, because 144028531 - 2¹⁹ = 143504243 is a prime.

It is a super-2 number, since 2×144028531² = 41488435484035922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 144028531.

It is not an unprimeable number, because it can be changed into a prime (144028561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 547506 + ... + 547768.

It is an arithmetic number, because the mean of its divisors is an integer number (6688836).

Almost surely, 2^144028531 is an apocalyptic number.

144028531 is a deficient number, since it is larger than the sum of its proper divisors (16503533).

144028531 is a wasteful number, since it uses less digits than its factorization.

144028531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 144028531 is about 12001.1887327881. The cubic root of 144028531 is about 524.1828933950.

Adding to 144028531 its reverse (135820441), we get a palindrome (279848972).

The spelling of 144028531 in words is "one hundred forty-four million, twenty-eight thousand, five hundred thirty-one".