143402023321 has 4 divisors (see below), whose sum is σ = 145013282100. Its totient is φ = 141790764544.

The previous prime is 143402023307. The next prime is 143402023333. The reversal of 143402023321 is 123320204341.

143402023321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14632289296 + 128769734025 = 120964^2 + 358845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143402023321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143402023421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805629256 + ... + 805629433.

It is an arithmetic number, because the mean of its divisors is an integer number (36253320525).

Almost surely, 2^143402023321 is an apocalyptic number.

It is an amenable number.

143402023321 is a deficient number, since it is larger than the sum of its proper divisors (1611258779).

143402023321 is an equidigital number, since it uses as much as digits as its factorization.

143402023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611258778.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 143402023321 its reverse (123320204341), we get a palindrome (266722227662).

The spelling of 143402023321 in words is "one hundred forty-three billion, four hundred two million, twenty-three thousand, three hundred twenty-one".