Base | Representation |
---|---|
bin | 10001001100001… |
… | …11110100001101 |
3 | 101001100200121001 |
4 | 20212013310031 |
5 | 243404224323 |
6 | 22150540301 |
7 | 3400526566 |
oct | 1046076415 |
9 | 331320531 |
10 | 144211213 |
11 | 74449023 |
12 | 40367691 |
13 | 23b530a3 |
14 | 1521d16d |
15 | c9d93ad |
hex | 8987d0d |
144211213 has 2 divisors, whose sum is σ = 144211214. Its totient is φ = 144211212.
The previous prime is 144211211. The next prime is 144211217. The reversal of 144211213 is 312112441.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 142014889 + 2196324 = 11917^2 + 1482^2 .
It is a cyclic number.
It is not a de Polignac number, because 144211213 - 21 = 144211211 is a prime.
Together with 144211211, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (144211211) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72105606 + 72105607.
It is an arithmetic number, because the mean of its divisors is an integer number (72105607).
Almost surely, 2144211213 is an apocalyptic number.
It is an amenable number.
144211213 is a deficient number, since it is larger than the sum of its proper divisors (1).
144211213 is an equidigital number, since it uses as much as digits as its factorization.
144211213 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 192, while the sum is 19.
The square root of 144211213 is about 12008.7973169673. The cubic root of 144211213 is about 524.4044196931.
Adding to 144211213 its reverse (312112441), we get a palindrome (456323654).
The spelling of 144211213 in words is "one hundred forty-four million, two hundred eleven thousand, two hundred thirteen".
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