143312440321 has 2 divisors, whose sum is σ = 143312440322. Its totient is φ = 143312440320.

The previous prime is 143312440319. The next prime is 143312440339. The reversal of 143312440321 is 123044213341.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128118180096 + 15194260225 = 357936^2 + 123265^2 .

It is a cyclic number.

It is not a de Polignac number, because 143312440321 - 2¹ = 143312440319 is a prime.

Together with 143312440319, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 143312440321.

It is not a weakly prime, because it can be changed into another prime (143312440351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71656220160 + 71656220161.

It is an arithmetic number, because the mean of its divisors is an integer number (71656220161).

Almost surely, 2^143312440321 is an apocalyptic number.

It is an amenable number.

143312440321 is a deficient number, since it is larger than the sum of its proper divisors (1).

143312440321 is an equidigital number, since it uses as much as digits as its factorization.

143312440321 is an evil number, because the sum of its binary digits is even.

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

Adding to 143312440321 its reverse (123044213341), we get a palindrome (266356653662).

The spelling of 143312440321 in words is "one hundred forty-three billion, three hundred twelve million, four hundred forty thousand, three hundred twenty-one".