Base | Representation |
---|---|
bin | 111101000000101111… |
… | …0010111101111010101 |
3 | 110112012002120200022201 |
4 | 1322001132113233111 |
5 | 4121312414210201 |
6 | 140105035524501 |
7 | 12315554114146 |
oct | 1720136275725 |
9 | 415162520281 |
10 | 131021241301 |
11 | 50625090905 |
12 | 214868b9731 |
13 | c48063b122 |
14 | 64acd85acd |
15 | 361c83d801 |
hex | 1e81797bd5 |
131021241301 has 2 divisors, whose sum is σ = 131021241302. Its totient is φ = 131021241300.
The previous prime is 131021241289. The next prime is 131021241319. The reversal of 131021241301 is 103142120131.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 130043178225 + 978063076 = 360615^2 + 31274^2 .
It is a cyclic number.
It is not a de Polignac number, because 131021241301 - 27 = 131021241173 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (131021241341) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65510620650 + 65510620651.
It is an arithmetic number, because the mean of its divisors is an integer number (65510620651).
Almost surely, 2131021241301 is an apocalyptic number.
It is an amenable number.
131021241301 is a deficient number, since it is larger than the sum of its proper divisors (1).
131021241301 is an equidigital number, since it uses as much as digits as its factorization.
131021241301 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 144, while the sum is 19.
Adding to 131021241301 its reverse (103142120131), we get a palindrome (234163361432).
The spelling of 131021241301 in words is "one hundred thirty-one billion, twenty-one million, two hundred forty-one thousand, three hundred one".
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