Base | Representation |
---|---|
bin | 10010100110100… |
… | …001001001000100 |
3 | 210202020200000210 |
4 | 102212201021010 |
5 | 1114343241413 |
6 | 50545035420 |
7 | 10506460644 |
oct | 2246411104 |
9 | 722220023 |
10 | 312087108 |
11 | 15018a733 |
12 | 88625b70 |
13 | 4c870638 |
14 | 2d63c524 |
15 | 1c5ea3c3 |
hex | 129a1244 |
312087108 has 48 divisors (see below), whose sum is σ = 754608960. Its totient is φ = 100324224.
The previous prime is 312087107. The next prime is 312087131. The reversal of 312087108 is 801780213.
It is a happy number.
It is a super-4 number, since 4×3120871084 (a number of 35 digits) contains 4444 as substring.
It is not an unprimeable number, because it can be changed into a prime (312087107) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33366 + ... + 41682.
It is an arithmetic number, because the mean of its divisors is an integer number (15721020).
Almost surely, 2312087108 is an apocalyptic number.
It is an amenable number.
312087108 is an abundant number, since it is smaller than the sum of its proper divisors (442521852).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
312087108 is a wasteful number, since it uses less digits than its factorization.
312087108 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8436 (or 8434 counting only the distinct ones).
The product of its (nonzero) digits is 2688, while the sum is 30.
The square root of 312087108 is about 17665.9873202717. The cubic root of 312087108 is about 678.3054027394.
The spelling of 312087108 in words is "three hundred twelve million, eighty-seven thousand, one hundred eight".
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