1031322111217 has 2 divisors, whose sum is σ = 1031322111218. Its totient is φ = 1031322111216.

The previous prime is 1031322111191. The next prime is 1031322111241. The reversal of 1031322111217 is 7121112231301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 918992566881 + 112329544336 = 958641^2 + 335156^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031322111217 - 2⁷ = 1031322111089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031322111191 and 1031322111200.

It is not a weakly prime, because it can be changed into another prime (1031322111917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515661055608 + 515661055609.

It is an arithmetic number, because the mean of its divisors is an integer number (515661055609).

Almost surely, 2^{1031322111217} is an apocalyptic number.

It is an amenable number.

1031322111217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031322111217 is an equidigital number, since it uses as much as digits as its factorization.

1031322111217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

Adding to 1031322111217 its reverse (7121112231301), we get a palindrome (8152434342518).

The spelling of 1031322111217 in words is "one trillion, thirty-one billion, three hundred twenty-two million, one hundred eleven thousand, two hundred seventeen".