1313021572171 has 2 divisors, whose sum is σ = 1313021572172. Its totient is φ = 1313021572170.

The previous prime is 1313021572153. The next prime is 1313021572193. The reversal of 1313021572171 is 1712751203131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313021572171 - 2¹⁷ = 1313021441099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313021572141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656510786085 + 656510786086.

It is an arithmetic number, because the mean of its divisors is an integer number (656510786086).

Almost surely, 2^{1313021572171} is an apocalyptic number.

1313021572171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313021572171 is an equidigital number, since it uses as much as digits as its factorization.

1313021572171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 34.

The spelling of 1313021572171 in words is "one trillion, three hundred thirteen billion, twenty-one million, five hundred seventy-two thousand, one hundred seventy-one".