144144431 has 4 divisors (see below), whose sum is σ = 151731000. Its totient is φ = 136557864.

The previous prime is 144144421. The next prime is 144144433. The reversal of 144144431 is 134441441.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 144144431 - 2⁶ = 144144367 is a prime.

It is a super-3 number, since 3×144144431³ (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 a self number, because there is not a number n which added to its sum of digits gives 144144431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144144433) 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, 3793256 + ... + 3793293.

It is an arithmetic number, because the mean of its divisors is an integer number (37932750).

Almost surely, 2^144144431 is an apocalyptic number.

144144431 is a deficient number, since it is larger than the sum of its proper divisors (7586569).

144144431 is an equidigital number, since it uses as much as digits as its factorization.

144144431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7586568.

The product of its digits is 3072, while the sum is 26.

The square root of 144144431 is about 12006.0164500970. The cubic root of 144144431 is about 524.3234593145.

Adding to 144144431 its reverse (134441441), we get a palindrome (278585872).

The spelling of 144144431 in words is "one hundred forty-four million, one hundred forty-four thousand, four hundred thirty-one".