| Base | Representation |
|---|---|
| bin | 100111000110101… |
| … | …0001111101000000 |
| 3 | 10101102221210122221 |
| 4 | 1032031101331000 |
| 5 | 10141344314011 |
| 6 | 334110540424 |
| 7 | 44341462561 |
| oct | 11615217500 |
| 9 | 3342853587 |
| 10 | 1312104256 |
| 11 | 613715391 |
| 12 | 307507714 |
| 13 | 17bab5568 |
| 14 | c6392168 |
| 15 | 7a2d1971 |
| hex | 4e351f40 |
1312104256 has 56 divisors (see below), whose sum is σ = 2644476296. Its totient is φ = 645857280.
The previous prime is 1312104247. The next prime is 1312104271. The reversal of 1312104256 is 6524012131.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 529000000 + 783104256 = 23000^2 + 27984^2 .
It is a super-2 number, since 2×13121042562 = 3443235157226627072, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 1312104256.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1495690 + ... + 1496566.
It is an arithmetic number, because the mean of its divisors is an integer number (47222791).
Almost surely, 21312104256 is an apocalyptic number.
1312104256 is a gapful number since it is divisible by the number (16) 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 1312104256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1322238148).
1312104256 is an abundant number, since it is smaller than the sum of its proper divisors (1332372040).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1312104256 is an equidigital number, since it uses as much as digits as its factorization.
1312104256 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1227 (or 1217 counting only the distinct ones).
The product of its (nonzero) digits is 1440, while the sum is 25.
The square root of 1312104256 is about 36222.9796676088. The cubic root of 1312104256 is about 1094.7697314706.
Adding to 1312104256 its reverse (6524012131), we get a palindrome (7836116387).
The spelling of 1312104256 in words is "one billion, three hundred twelve million, one hundred four thousand, two hundred fifty-six".
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