144404331 has 4 divisors (see below), whose sum is σ = 192539112. Its totient is φ = 96269552.

The previous prime is 144404321. The next prime is 144404333. The reversal of 144404331 is 133404441.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144404331 is a prime.

It is a super-2 number, since 2×144404331² = 41705221623115122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144404333) 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, 24067386 + ... + 24067391.

It is an arithmetic number, because the mean of its divisors is an integer number (48134778).

Almost surely, 2^144404331 is an apocalyptic number.

144404331 is a deficient number, since it is larger than the sum of its proper divisors (48134781).

144404331 is an equidigital number, since it uses as much as digits as its factorization.

144404331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48134780.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 144404331 is about 12016.8353155063. The cubic root of 144404331 is about 524.6383977097.

Adding to 144404331 its reverse (133404441), we get a palindrome (277808772).

The spelling of 144404331 in words is "one hundred forty-four million, four hundred four thousand, three hundred thirty-one".