143401243321 has 32 divisors (see below), whose sum is σ = 173880241920. Its totient is φ = 115847383680.

The previous prime is 143401243303. The next prime is 143401243331. The reversal of 143401243321 is 123342104341.

It is a happy number.

It is not a de Polignac number, because 143401243321 - 2¹¹ = 143401241273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143401243321.

It is not an unprimeable number, because it can be changed into a prime (143401243331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9450981 + ... + 9466141.

It is an arithmetic number, because the mean of its divisors is an integer number (5433757560).

Almost surely, 2^143401243321 is an apocalyptic number.

It is an amenable number.

143401243321 is a deficient number, since it is larger than the sum of its proper divisors (30478998599).

143401243321 is an equidigital number, since it uses as much as digits as its factorization.

143401243321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15422 (or 15384 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 143401243321 its reverse (123342104341), we get a palindrome (266743347662).

The spelling of 143401243321 in words is "one hundred forty-three billion, four hundred one million, two hundred forty-three thousand, three hundred twenty-one".