144531133 has 4 divisors (see below), whose sum is σ = 144555228. Its totient is φ = 144507040.

The previous prime is 144531097. The next prime is 144531151. The reversal of 144531133 is 331135441.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 20052484 + 124478649 = 4478^2 + 11157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144531133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144531098 and 144531107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144531173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4863 + ... + 17683.

It is an arithmetic number, because the mean of its divisors is an integer number (36138807).

Almost surely, 2^144531133 is an apocalyptic number.

It is an amenable number.

144531133 is a deficient number, since it is larger than the sum of its proper divisors (24095).

144531133 is a wasteful number, since it uses less digits than its factorization.

144531133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24094.

The product of its digits is 2160, while the sum is 25.

The square root of 144531133 is about 12022.1101725113. The cubic root of 144531133 is about 524.7919151173.

Adding to 144531133 its reverse (331135441), we get a palindrome (475666574).

The spelling of 144531133 in words is "one hundred forty-four million, five hundred thirty-one thousand, one hundred thirty-three".