143241243217 has 2 divisors, whose sum is σ = 143241243218. Its totient is φ = 143241243216.

The previous prime is 143241243191. The next prime is 143241243239. The reversal of 143241243217 is 712342142341.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122667357121 + 20573886096 = 350239^2 + 143436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143241243217 is a prime.

It is not a weakly prime, because it can be changed into another prime (143241043217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71620621608 + 71620621609.

It is an arithmetic number, because the mean of its divisors is an integer number (71620621609).

Almost surely, 2^143241243217 is an apocalyptic number.

It is an amenable number.

143241243217 is a deficient number, since it is larger than the sum of its proper divisors (1).

143241243217 is an equidigital number, since it uses as much as digits as its factorization.

143241243217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 34.

Adding to 143241243217 its reverse (712342142341), we get a palindrome (855583385558).

The spelling of 143241243217 in words is "one hundred forty-three billion, two hundred forty-one million, two hundred forty-three thousand, two hundred seventeen".