1031311302193 has 2 divisors, whose sum is σ = 1031311302194. Its totient is φ = 1031311302192.

The previous prime is 1031311302191. The next prime is 1031311302209. The reversal of 1031311302193 is 3912031131301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 997347760929 + 33963541264 = 998673^2 + 184292^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031311302193 - 2¹ = 1031311302191 is a prime.

Together with 1031311302191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1031311302191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515655651096 + 515655651097.

It is an arithmetic number, because the mean of its divisors is an integer number (515655651097).

Almost surely, 2^{1031311302193} is an apocalyptic number.

It is an amenable number.

1031311302193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031311302193 is an equidigital number, since it uses as much as digits as its factorization.

1031311302193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 28.

Adding to 1031311302193 its reverse (3912031131301), we get a palindrome (4943342433494).

The spelling of 1031311302193 in words is "one trillion, thirty-one billion, three hundred eleven million, three hundred two thousand, one hundred ninety-three".