Base | Representation |
---|---|
bin | 100111001000110… |
… | …0000001000011011 |
3 | 10101112001000201000 |
4 | 1032101200020123 |
5 | 10142140222112 |
6 | 334150400043 |
7 | 44354052141 |
oct | 11621401033 |
9 | 3345030630 |
10 | 1313210907 |
11 | 614300878 |
12 | 307960023 |
13 | 17c0b2198 |
14 | c659d591 |
15 | 7a44e7dc |
hex | 4e46021b |
1313210907 has 8 divisors (see below), whose sum is σ = 1945497680. Its totient is φ = 875473920.
The previous prime is 1313210891. The next prime is 1313210947. The reversal of 1313210907 is 7090123131.
It is not a de Polignac number, because 1313210907 - 24 = 1313210891 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 48637441 = 1313210907 / (1 + 3 + 1 + 3 + 2 + 1 + 0 + 9 + 0 + 7).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1313210947) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24318694 + ... + 24318747.
It is an arithmetic number, because the mean of its divisors is an integer number (243187210).
Almost surely, 21313210907 is an apocalyptic number.
1313210907 is a deficient number, since it is larger than the sum of its proper divisors (632286773).
1313210907 is an equidigital number, since it uses as much as digits as its factorization.
1313210907 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 48637450 (or 48637444 counting only the distinct ones).
The product of its (nonzero) digits is 1134, while the sum is 27.
The square root of 1313210907 is about 36238.2519859885. The cubic root of 1313210907 is about 1095.0774274392.
The spelling of 1313210907 in words is "one billion, three hundred thirteen million, two hundred ten thousand, nine hundred seven".
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