Base | Representation |
---|---|
bin | 110010000011… |
… | …111010000001 |
3 | 220200201122111 |
4 | 302003322001 |
5 | 11324420301 |
6 | 1145135321 |
7 | 216355030 |
oct | 62037201 |
9 | 26621574 |
10 | 13123201 |
11 | 7453723 |
12 | 448a541 |
13 | 2946310 |
14 | 1a58717 |
15 | 1243551 |
hex | c83e81 |
13123201 has 24 divisors (see below), whose sum is σ = 17192000. Its totient is φ = 9752832.
The previous prime is 13123183. The next prime is 13123207. The reversal of 13123201 is 10232131.
It is not a de Polignac number, because 13123201 - 25 = 13123169 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (13).
It is not an unprimeable number, because it can be changed into a prime (13123207) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26050 + ... + 26548.
Almost surely, 213123201 is an apocalyptic number.
It is an amenable number.
13123201 is a deficient number, since it is larger than the sum of its proper divisors (4068799).
13123201 is a wasteful number, since it uses less digits than its factorization.
13123201 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 553 (or 536 counting only the distinct ones).
The product of its (nonzero) digits is 36, while the sum is 13.
The square root of 13123201 is about 3622.5958924506. The cubic root of 13123201 is about 235.8739212136.
Adding to 13123201 its reverse (10232131), we get a palindrome (23355332).
It can be divided in two parts, 131 and 23201, that added together give a palindrome (23332).
The spelling of 13123201 in words is "thirteen million, one hundred twenty-three thousand, two hundred one".
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