1312217800871 has 4 divisors (see below), whose sum is σ = 1312262755200. Its totient is φ = 1312172846544.

The previous prime is 1312217800799. The next prime is 1312217800879. The reversal of 1312217800871 is 1780087122131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1312217800871 - 2¹⁸ = 1312217538727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312217800879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22433351 + ... + 22491768.

It is an arithmetic number, because the mean of its divisors is an integer number (328065688800).

Almost surely, 2^{1312217800871} is an apocalyptic number.

1312217800871 is a deficient number, since it is larger than the sum of its proper divisors (44954329).

1312217800871 is an equidigital number, since it uses as much as digits as its factorization.

1312217800871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44954328.

The product of its (nonzero) digits is 37632, while the sum is 41.

The spelling of 1312217800871 in words is "one trillion, three hundred twelve billion, two hundred seventeen million, eight hundred thousand, eight hundred seventy-one".