144431123 has 4 divisors (see below), whose sum is σ = 144860040. Its totient is φ = 144002208.

The previous prime is 144431113. The next prime is 144431129. The reversal of 144431123 is 321134441.

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-144431123 is a prime.

It is a super-2 number, since 2×144431123² = 41720698582082258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144431129) 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 3 ways as a sum of consecutive naturals, for example, 213953 + ... + 214626.

It is an arithmetic number, because the mean of its divisors is an integer number (36215010).

Almost surely, 2^144431123 is an apocalyptic number.

144431123 is a deficient number, since it is larger than the sum of its proper divisors (428917).

144431123 is an equidigital number, since it uses as much as digits as its factorization.

144431123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428916.

The product of its digits is 1152, while the sum is 23.

The square root of 144431123 is about 12017.9500331795. The cubic root of 144431123 is about 524.6708418953.

Adding to 144431123 its reverse (321134441), we get a palindrome (465565564).

The spelling of 144431123 in words is "one hundred forty-four million, four hundred thirty-one thousand, one hundred twenty-three".