143131562222521 has 4 divisors (see below), whose sum is σ = 144548706403044. Its totient is φ = 141714418042000.

The previous prime is 143131562222513. The next prime is 143131562222543. The reversal of 143131562222521 is 125222265131341.

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 133196527566400 + 9935034656121 = 11541080^2 + 3151989^2 .

It is a cyclic number.

It is not a de Polignac number, because 143131562222521 - 2³ = 143131562222513 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143131562222501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708572090110 + ... + 708572090311.

It is an arithmetic number, because the mean of its divisors is an integer number (36137176600761).

Almost surely, 2^{143131562222521} is an apocalyptic number.

It is an amenable number.

143131562222521 is a deficient number, since it is larger than the sum of its proper divisors (1417144180523).

143131562222521 is a wasteful number, since it uses less digits than its factorization.

143131562222521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417144180522.

The product of its digits is 172800, while the sum is 40.

The spelling of 143131562222521 in words is "one hundred forty-three trillion, one hundred thirty-one billion, five hundred sixty-two million, two hundred twenty-two thousand, five hundred twenty-one".