| Base | Representation |
|---|---|
| bin | 100101000011011… |
| … | …0111010100000100 |
| 3 | 10012122111212100220 |
| 4 | 1022012313110010 |
| 5 | 10021242012122 |
| 6 | 323212304340 |
| 7 | 42544663305 |
| oct | 11206672404 |
| 9 | 3178455326 |
| 10 | 1243313412 |
| 11 | 5888aa850 |
| 12 | 2a84720b0 |
| 13 | 16a77b213 |
| 14 | bb1a67ac |
| 15 | 7424425c |
| hex | 4a1b7504 |
1243313412 has 96 divisors (see below), whose sum is σ = 3364408320. Its totient is φ = 353393280.
The previous prime is 1243313389. The next prime is 1243313417. The reversal of 1243313412 is 2143133421.
It is a happy number.
It is a nude number because it is divisible by every one of its digits.
It is not an unprimeable number, because it can be changed into a prime (1243313417) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255918 + ... + 260730.
It is an arithmetic number, because the mean of its divisors is an integer number (35045920).
Almost surely, 21243313412 is an apocalyptic number.
1243313412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1243313412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682204160).
1243313412 is an abundant number, since it is smaller than the sum of its proper divisors (2121094908).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1243313412 is a wasteful number, since it uses less digits than its factorization.
1243313412 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4953 (or 4951 counting only the distinct ones).
The product of its digits is 1728, while the sum is 24.
The square root of 1243313412 is about 35260.6496253260. The cubic root of 1243313412 is about 1075.2931342659.
Adding to 1243313412 its reverse (2143133421), we get a palindrome (3386446833).
Subtracting 1243313412 from its reverse (2143133421), we obtain a square (899820009 = 299972).
The spelling of 1243313412 in words is "one billion, two hundred forty-three million, three hundred thirteen thousand, four hundred twelve".
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