312670988517887 has 4 divisors (see below), whose sum is σ = 316438108861560. Its totient is φ = 308903868174216.

The previous prime is 312670988517883. The next prime is 312670988517893. The reversal of 312670988517887 is 788715889076213.

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 312670988517887 - 2² = 312670988517883 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 (312670988517883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1883560171712 + ... + 1883560171877.

It is an arithmetic number, because the mean of its divisors is an integer number (79109527215390).

Almost surely, 2^{312670988517887} is an apocalyptic number.

312670988517887 is a deficient number, since it is larger than the sum of its proper divisors (3767120343673).

312670988517887 is an equidigital number, since it uses as much as digits as its factorization.

312670988517887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767120343672.

The product of its (nonzero) digits is 2275983360, while the sum is 80.

The spelling of 312670988517887 in words is "three hundred twelve trillion, six hundred seventy billion, nine hundred eighty-eight million, five hundred seventeen thousand, eight hundred eighty-seven".