143221344 has 96 divisors (see below), whose sum is σ = 436214016. Its totient is φ = 40296960.

The previous prime is 143221303. The next prime is 143221349. The reversal of 143221344 is 443122341.

143221344 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143221349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43434 + ... + 46614.

It is an arithmetic number, because the mean of its divisors is an integer number (4543896).

Almost surely, 2^143221344 is an apocalyptic number.

143221344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143221344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218107008).

143221344 is an abundant number, since it is smaller than the sum of its proper divisors (292992672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143221344 is a wasteful number, since it uses less digits than its factorization.

143221344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268 (or 3260 counting only the distinct ones).

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

The square root of 143221344 is about 11967.5120221373. The cubic root of 143221344 is about 523.2018226984.

Adding to 143221344 its reverse (443122341), we get a palindrome (586343685).

The spelling of 143221344 in words is "one hundred forty-three million, two hundred twenty-one thousand, three hundred forty-four".