Base | Representation |
---|---|
bin | 11000010001011100… |
… | …00101100111001111 |
3 | 1020122011111121111122 |
4 | 30020232011213033 |
5 | 203141441414411 |
6 | 5553023511155 |
7 | 640632245216 |
oct | 141056054717 |
9 | 36564447448 |
10 | 13031201231 |
11 | 55878563a4 |
12 | 26381584bb |
13 | 12c89a7679 |
14 | 8b896c07d |
15 | 5140669db |
hex | 308b859cf |
13031201231 has 2 divisors, whose sum is σ = 13031201232. Its totient is φ = 13031201230.
The previous prime is 13031201179. The next prime is 13031201263. The reversal of 13031201231 is 13210213031.
13031201231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 13031201231 - 214 = 13031184847 is a prime.
It is a super-2 number, since 2×130312012312 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13031203231) 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, 6515600615 + 6515600616.
It is an arithmetic number, because the mean of its divisors is an integer number (6515600616).
Almost surely, 213031201231 is an apocalyptic number.
13031201231 is a deficient number, since it is larger than the sum of its proper divisors (1).
13031201231 is an equidigital number, since it uses as much as digits as its factorization.
13031201231 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 108, while the sum is 17.
Adding to 13031201231 its reverse (13210213031), we get a palindrome (26241414262).
The spelling of 13031201231 in words is "thirteen billion, thirty-one million, two hundred one thousand, two hundred thirty-one".
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