312312850866 has 24 divisors (see below), whose sum is σ = 677632282860. Its totient is φ = 103957446816.

The previous prime is 312312850859. The next prime is 312312850867. The reversal of 312312850866 is 668058213213.

312312850866 is a `hidden beast` number, since 3 + 12 + 3 + 128 + 508 + 6 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 218112350625 + 94200500241 = 467025^2 + 306921^2 .

It is not an unprimeable number, because it can be changed into a prime (312312850867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12223285 + ... + 12248808.

Almost surely, 2^312312850866 is an apocalyptic number.

312312850866 is an abundant number, since it is smaller than the sum of its proper divisors (365319431994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312312850866 is a wasteful number, since it uses less digits than its factorization.

312312850866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24472810 (or 24472807 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 312312850866 in words is "three hundred twelve billion, three hundred twelve million, eight hundred fifty thousand, eight hundred sixty-six".