Base | Representation |
---|---|
bin | 10111011011110001… |
… | …10010101010000101 |
3 | 1012110210102011011102 |
4 | 23231320302222011 |
5 | 201231220203331 |
6 | 5440222545445 |
7 | 623524632266 |
oct | 135570625205 |
9 | 35423364142 |
10 | 12581022341 |
11 | 5376728328 |
12 | 2531438285 |
13 | 1256647424 |
14 | 874c6496d |
15 | 4d97904cb |
hex | 2ede32a85 |
12581022341 has 2 divisors, whose sum is σ = 12581022342. Its totient is φ = 12581022340.
The previous prime is 12581022271. The next prime is 12581022343. The reversal of 12581022341 is 14322018521.
It is a happy number.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 11495056225 + 1085966116 = 107215^2 + 32954^2 .
It is an emirp because it is prime and its reverse (14322018521) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 12581022341 - 210 = 12581021317 is a prime.
It is a super-2 number, since 2×125810223412 (a number of 21 digits) contains 22 as substring.
Together with 12581022343, it forms a pair of twin primes.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12581022343) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6290511170 + 6290511171.
It is an arithmetic number, because the mean of its divisors is an integer number (6290511171).
Almost surely, 212581022341 is an apocalyptic number.
It is an amenable number.
12581022341 is a deficient number, since it is larger than the sum of its proper divisors (1).
12581022341 is an equidigital number, since it uses as much as digits as its factorization.
12581022341 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3840, while the sum is 29.
The spelling of 12581022341 in words is "twelve billion, five hundred eighty-one million, twenty-two thousand, three hundred forty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.068 sec. • engine limits •