144321303 has 16 divisors (see below), whose sum is σ = 223525376. Its totient is φ = 81116640.

The previous prime is 144321301. The next prime is 144321311. The reversal of 144321303 is 303123441.

It is not a de Polignac number, because 144321303 - 2¹ = 144321301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 144321303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144321301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55051 + ... + 57612.

It is an arithmetic number, because the mean of its divisors is an integer number (13970336).

Almost surely, 2^144321303 is an apocalyptic number.

144321303 is a deficient number, since it is larger than the sum of its proper divisors (79204073).

144321303 is a wasteful number, since it uses less digits than its factorization.

144321303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112734.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 144321303 is about 12013.3801654655. The cubic root of 144321303 is about 524.5378281776.

Adding to 144321303 its reverse (303123441), we get a palindrome (447444744).

The spelling of 144321303 in words is "one hundred forty-four million, three hundred twenty-one thousand, three hundred three".