143131543321 has 24 divisors (see below), whose sum is σ = 158485737240. Its totient is φ = 129158355456.

The previous prime is 143131543301. The next prime is 143131543327. The reversal of 143131543321 is 123345131341.

It can be written as a sum of positive squares in 12 ways, for example, as 106664294025 + 36467249296 = 326595^2 + 190964^2 .

It is not a de Polignac number, because 143131543321 - 2⁹ = 143131542809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143131543327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2452245 + ... + 2509933.

It is an arithmetic number, because the mean of its divisors is an integer number (6603572385).

Almost surely, 2^143131543321 is an apocalyptic number.

It is an amenable number.

143131543321 is a deficient number, since it is larger than the sum of its proper divisors (15354193919).

143131543321 is a wasteful number, since it uses less digits than its factorization.

143131543321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58045 (or 58032 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

Adding to 143131543321 its reverse (123345131341), we get a palindrome (266476674662).

The spelling of 143131543321 in words is "one hundred forty-three billion, one hundred thirty-one million, five hundred forty-three thousand, three hundred twenty-one".