1312165912273 has 2 divisors, whose sum is σ = 1312165912274. Its totient is φ = 1312165912272.

The previous prime is 1312165912259. The next prime is 1312165912301. The reversal of 1312165912273 is 3722195612131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1011134824704 + 301031087569 = 1005552^2 + 548663^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312165912273 - 2⁵ = 1312165912241 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312165912073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656082956136 + 656082956137.

It is an arithmetic number, because the mean of its divisors is an integer number (656082956137).

Almost surely, 2^{1312165912273} is an apocalyptic number.

It is an amenable number.

1312165912273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312165912273 is an equidigital number, since it uses as much as digits as its factorization.

1312165912273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The spelling of 1312165912273 in words is "one trillion, three hundred twelve billion, one hundred sixty-five million, nine hundred twelve thousand, two hundred seventy-three".