312110987147891 has 2 divisors, whose sum is σ = 312110987147892. Its totient is φ = 312110987147890.

The previous prime is 312110987147831. The next prime is 312110987148161. The reversal of 312110987147891 is 198741789011213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312110987147891 - 2³⁸ = 311836109240947 is a prime.

It is not a weakly prime, because it can be changed into another prime (312110987147831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156055493573945 + 156055493573946.

It is an arithmetic number, because the mean of its divisors is an integer number (156055493573946).

Almost surely, 2^{312110987147891} is an apocalyptic number.

312110987147891 is a deficient number, since it is larger than the sum of its proper divisors (1).

312110987147891 is an equidigital number, since it uses as much as digits as its factorization.

312110987147891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6096384, while the sum is 62.

The spelling of 312110987147891 in words is "three hundred twelve trillion, one hundred ten billion, nine hundred eighty-seven million, one hundred forty-seven thousand, eight hundred ninety-one".