143231321017 has 2 divisors, whose sum is σ = 143231321018. Its totient is φ = 143231321016.

The previous prime is 143231320961. The next prime is 143231321047. The reversal of 143231321017 is 710123132341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142686752121 + 544568896 = 377739^2 + 23336^2 .

It is a cyclic number.

It is not a de Polignac number, because 143231321017 - 2³⁵ = 108871582649 is a prime.

It is a super-2 number, since 2×143231321017² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (143231321047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71615660508 + 71615660509.

It is an arithmetic number, because the mean of its divisors is an integer number (71615660509).

Almost surely, 2^143231321017 is an apocalyptic number.

It is an amenable number.

143231321017 is a deficient number, since it is larger than the sum of its proper divisors (1).

143231321017 is an equidigital number, since it uses as much as digits as its factorization.

143231321017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 143231321017 its reverse (710123132341), we get a palindrome (853354453358).

The spelling of 143231321017 in words is "one hundred forty-three billion, two hundred thirty-one million, three hundred twenty-one thousand, seventeen".