Base | Representation |
---|---|
bin | 11000101001001010… |
… | …10011000000010101 |
3 | 1021011000222222120101 |
4 | 30110211103000111 |
5 | 204043414122011 |
6 | 10024453334101 |
7 | 645600020554 |
oct | 142445230025 |
9 | 37130888511 |
10 | 13230223381 |
11 | 567a130711 |
12 | 2692937331 |
13 | 132acab85b |
14 | 8d7177d9b |
15 | 52677b2c1 |
hex | 314953015 |
13230223381 has 2 divisors, whose sum is σ = 13230223382. Its totient is φ = 13230223380.
The previous prime is 13230223379. The next prime is 13230223397. The reversal of 13230223381 is 18332203231.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 9517758481 + 3712464900 = 97559^2 + 60930^2 .
It is a cyclic number.
It is not a de Polignac number, because 13230223381 - 21 = 13230223379 is a prime.
It is a super-2 number, since 2×132302233812 (a number of 21 digits) contains 22 as substring.
Together with 13230223379, 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 (13230229381) 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, 6615111690 + 6615111691.
It is an arithmetic number, because the mean of its divisors is an integer number (6615111691).
Almost surely, 213230223381 is an apocalyptic number.
It is an amenable number.
13230223381 is a deficient number, since it is larger than the sum of its proper divisors (1).
13230223381 is an equidigital number, since it uses as much as digits as its factorization.
13230223381 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 5184, while the sum is 28.
The spelling of 13230223381 in words is "thirteen billion, two hundred thirty million, two hundred twenty-three thousand, three hundred eighty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.081 sec. • engine limits •