131442223321 has 2 divisors, whose sum is σ = 131442223322. Its totient is φ = 131442223320.

The previous prime is 131442223309. The next prime is 131442223337. The reversal of 131442223321 is 123322244131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127423297296 + 4018926025 = 356964^2 + 63395^2 .

It is an emirp because it is prime and its reverse (123322244131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131442223321 - 2⁹ = 131442222809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131442223321.

It is not a weakly prime, because it can be changed into another prime (131442223921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65721111660 + 65721111661.

It is an arithmetic number, because the mean of its divisors is an integer number (65721111661).

Almost surely, 2^131442223321 is an apocalyptic number.

It is an amenable number.

131442223321 is a deficient number, since it is larger than the sum of its proper divisors (1).

131442223321 is an equidigital number, since it uses as much as digits as its factorization.

131442223321 is an evil number, because the sum of its binary digits is even.

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

Adding to 131442223321 its reverse (123322244131), we get a palindrome (254764467452).

The spelling of 131442223321 in words is "one hundred thirty-one billion, four hundred forty-two million, two hundred twenty-three thousand, three hundred twenty-one".