144223431 has 8 divisors (see below), whose sum is σ = 209779584. Its totient is φ = 87408120.

The previous prime is 144223421. The next prime is 144223477. The reversal of 144223431 is 134322441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144223431 - 2⁶ = 144223367 is a prime.

It is a super-2 number, since 2×144223431² = 41600796098823522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144223411) 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 7 ways as a sum of consecutive naturals, for example, 2185171 + ... + 2185236.

It is an arithmetic number, because the mean of its divisors is an integer number (26222448).

Almost surely, 2^144223431 is an apocalyptic number.

144223431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

144223431 is a deficient number, since it is larger than the sum of its proper divisors (65556153).

144223431 is a wasteful number, since it uses less digits than its factorization.

144223431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370421.

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

The square root of 144223431 is about 12009.3060165856. The cubic root of 144223431 is about 524.4192289721.

Adding to 144223431 its reverse (134322441), we get a palindrome (278545872).

The spelling of 144223431 in words is "one hundred forty-four million, two hundred twenty-three thousand, four hundred thirty-one".