It is a happy number.
It is a tau number, because it is divible by the number of its divisors (18).
It is an ABA number since it can be written as A⋅BA, here for A=2, B=22353.
It is an unprimeable number.
Almost surely, 2999313218 is an apocalyptic number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
999313218 is an frugal number, since it uses more digits than its factorization.
999313218 is an evil number, because the sum of its binary digits is even.
The square root of 999313218 is about 31611.9157597258. The cubic root of 999313218 is about 999.7710202389.
The spelling of 999313218 in words is "nine hundred ninety-nine million, three hundred thirteen thousand, two hundred eighteen".