313145566000 has 80 divisors (see below), whose sum is σ = 761370206688. Its totient is φ = 124566048000.

The previous prime is 313145565983. The next prime is 313145566003. The reversal of 313145566000 is 665541313.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (313145566003) 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 15 ways as a sum of consecutive naturals, for example, 70522 + ... + 794521.

Almost surely, 2^313145566000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 313145566000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380685103344).

313145566000 is an abundant number, since it is smaller than the sum of its proper divisors (448224640688).

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

313145566000 is a wasteful number, since it uses less digits than its factorization.

313145566000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865247 (or 865231 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 313145566000 in words is "three hundred thirteen billion, one hundred forty-five million, five hundred sixty-six thousand".