| Base | Representation |
|---|---|
| bin | 100111000111001… |
| … | …1101011101010000 |
| 3 | 10101110112111220011 |
| 4 | 1032032131131100 |
| 5 | 10141434213040 |
| 6 | 334121324304 |
| 7 | 44344221325 |
| oct | 11616353520 |
| 9 | 3343474804 |
| 10 | 1312413520 |
| 11 | 613906780 |
| 12 | 307636694 |
| 13 | 17bb93262 |
| 14 | c6432b4c |
| 15 | 7a3433ea |
| hex | 4e39d750 |
1312413520 has 80 divisors (see below), whose sum is σ = 3436208640. Its totient is φ = 461836800.
The previous prime is 1312413503. The next prime is 1312413521. The reversal of 1312413520 is 253142131.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (80).
It is a Harshad number since it is a multiple of its sum of digits (22).
It is a junction number, because it is equal to n+sod(n) for n = 1312413491 and 1312413500.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1312413521) 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, 3226 + ... + 51334.
It is an arithmetic number, because the mean of its divisors is an integer number (42952608).
Almost surely, 21312413520 is an apocalyptic number.
1312413520 is a gapful number since it is divisible by the number (10) 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 1312413520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1718104320).
1312413520 is an abundant number, since it is smaller than the sum of its proper divisors (2123795120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1312413520 is a wasteful number, since it uses less digits than its factorization.
1312413520 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 48164 (or 48158 counting only the distinct ones).
The product of its (nonzero) digits is 720, while the sum is 22.
The square root of 1312413520 is about 36227.2483084211. The cubic root of 1312413520 is about 1094.8557374079.
Adding to 1312413520 its reverse (253142131), we get a palindrome (1565555651).
The spelling of 1312413520 in words is "one billion, three hundred twelve million, four hundred thirteen thousand, five hundred twenty".
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