1231417936871 has 2 divisors, whose sum is σ = 1231417936872. Its totient is φ = 1231417936870.

The previous prime is 1231417936841. The next prime is 1231417936909. The reversal of 1231417936871 is 1786397141321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1231417936871 - 2¹⁸ = 1231417674727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231417936811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615708968435 + 615708968436.

It is an arithmetic number, because the mean of its divisors is an integer number (615708968436).

Almost surely, 2^{1231417936871} is an apocalyptic number.

1231417936871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231417936871 is an equidigital number, since it uses as much as digits as its factorization.

1231417936871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 53.

The spelling of 1231417936871 in words is "one trillion, two hundred thirty-one billion, four hundred seventeen million, nine hundred thirty-six thousand, eight hundred seventy-one".