143384321 has 2 divisors, whose sum is σ = 143384322. Its totient is φ = 143384320.

The previous prime is 143384309. The next prime is 143384383. The reversal of 143384321 is 123483341.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113529025 + 29855296 = 10655^2 + 5464^2 .

It is an emirp because it is prime and its reverse (123483341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143384321 - 2²² = 139190017 is a prime.

It is not a weakly prime, because it can be changed into another prime (143384821) 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 as a sum of consecutive naturals, namely, 71692160 + 71692161.

It is an arithmetic number, because the mean of its divisors is an integer number (71692161).

Almost surely, 2^143384321 is an apocalyptic number.

It is an amenable number.

143384321 is a deficient number, since it is larger than the sum of its proper divisors (1).

143384321 is an equidigital number, since it uses as much as digits as its factorization.

143384321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

The square root of 143384321 is about 11974.3192290835. The cubic root of 143384321 is about 523.4002045354.

The spelling of 143384321 in words is "one hundred forty-three million, three hundred eighty-four thousand, three hundred twenty-one".