Base | Representation |
---|---|
bin | 111101000000101101… |
… | …0000001101001001111 |
3 | 110112012000102210210122 |
4 | 1322001122001221033 |
5 | 4121312121232343 |
6 | 140104555255155 |
7 | 12315541331213 |
oct | 1720132015117 |
9 | 415160383718 |
10 | 131020102223 |
11 | 5062448301a |
12 | 2148644a4bb |
13 | c48032c80a |
14 | 64acb6a943 |
15 | 361c6b6068 |
hex | 1e81681a4f |
131020102223 has 2 divisors, whose sum is σ = 131020102224. Its totient is φ = 131020102222.
The previous prime is 131020102219. The next prime is 131020102231. The reversal of 131020102223 is 322201020131.
It is a weak prime.
It is an emirp because it is prime and its reverse (322201020131) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 131020102223 - 22 = 131020102219 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (131020102273) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65510051111 + 65510051112.
It is an arithmetic number, because the mean of its divisors is an integer number (65510051112).
Almost surely, 2131020102223 is an apocalyptic number.
131020102223 is a deficient number, since it is larger than the sum of its proper divisors (1).
131020102223 is an equidigital number, since it uses as much as digits as its factorization.
131020102223 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 144, while the sum is 17.
Adding to 131020102223 its reverse (322201020131), we get a palindrome (453221122354).
The spelling of 131020102223 in words is "one hundred thirty-one billion, twenty million, one hundred two thousand, two hundred twenty-three".
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