143340321 has 8 divisors (see below), whose sum is σ = 191213344. Its totient is φ = 95513760.

The previous prime is 143340317. The next prime is 143340367. The reversal of 143340321 is 123043341.

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

It is not a de Polignac number, because 143340321 - 2² = 143340317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143340121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3631 + ... + 17316.

It is an arithmetic number, because the mean of its divisors is an integer number (23901668).

Almost surely, 2^143340321 is an apocalyptic number.

It is an amenable number.

143340321 is a deficient number, since it is larger than the sum of its proper divisors (47873023).

143340321 is a wasteful number, since it uses less digits than its factorization.

143340321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23231.

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

The square root of 143340321 is about 11972.4818229137. The cubic root of 143340321 is about 523.3466608729.

Adding to 143340321 its reverse (123043341), we get a palindrome (266383662).

The spelling of 143340321 in words is "one hundred forty-three million, three hundred forty thousand, three hundred twenty-one".