Base | Representation |
---|---|
bin | 111100101011100100… |
… | …1110010001000000001 |
3 | 110110100121111220112012 |
4 | 1321113021302020001 |
5 | 4113334131420111 |
6 | 135510353142305 |
7 | 12262142635502 |
oct | 1712711621001 |
9 | 413317456465 |
10 | 130311201281 |
11 | 502a0304278 |
12 | 21308b5a995 |
13 | c3994c4bc1 |
14 | 6442956ba9 |
15 | 35ca33648b |
hex | 1e57272201 |
130311201281 has 2 divisors, whose sum is σ = 130311201282. Its totient is φ = 130311201280.
The previous prime is 130311201217. The next prime is 130311201313. The reversal of 130311201281 is 182102113031.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 95471112256 + 34840089025 = 308984^2 + 186655^2 .
It is an emirp because it is prime and its reverse (182102113031) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 130311201281 - 26 = 130311201217 is a prime.
It is a super-2 number, since 2×1303112012812 (a number of 23 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (130311201781) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65155600640 + 65155600641.
It is an arithmetic number, because the mean of its divisors is an integer number (65155600641).
Almost surely, 2130311201281 is an apocalyptic number.
It is an amenable number.
130311201281 is a deficient number, since it is larger than the sum of its proper divisors (1).
130311201281 is an equidigital number, since it uses as much as digits as its factorization.
130311201281 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 288, while the sum is 23.
The spelling of 130311201281 in words is "one hundred thirty billion, three hundred eleven million, two hundred one thousand, two hundred eighty-one".
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