Base | Representation |
---|---|
bin | 110010010100… |
… | …010001010111 |
3 | 220211010121002 |
4 | 302110101113 |
5 | 11334041411 |
6 | 1150413515 |
7 | 220054325 |
oct | 62242127 |
9 | 26733532 |
10 | 13190231 |
11 | 749a01a |
12 | 450129b |
13 | 296a992 |
14 | 1a74d15 |
15 | 125833b |
hex | c94457 |
13190231 has 2 divisors, whose sum is σ = 13190232. Its totient is φ = 13190230.
The previous prime is 13190209. The next prime is 13190257. The reversal of 13190231 is 13209131.
13190231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 13190231 - 218 = 12928087 is a prime.
It is a super-2 number, since 2×131902312 = 347964387666722, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13190831) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6595115 + 6595116.
It is an arithmetic number, because the mean of its divisors is an integer number (6595116).
Almost surely, 213190231 is an apocalyptic number.
13190231 is a deficient number, since it is larger than the sum of its proper divisors (1).
13190231 is an equidigital number, since it uses as much as digits as its factorization.
13190231 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 162, while the sum is 20.
The square root of 13190231 is about 3631.8357617051. The cubic root of 13190231 is about 236.2748342267.
Adding to 13190231 its reverse (13209131), we get a palindrome (26399362).
The spelling of 13190231 in words is "thirteen million, one hundred ninety thousand, two hundred thirty-one".
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