Base | Representation |
---|---|
bin | 11000011110110001… |
… | …01001001001011001 |
3 | 1020220221220121012000 |
4 | 30033120221021121 |
5 | 203404103120441 |
6 | 10012100311213 |
7 | 643460553630 |
oct | 141730511131 |
9 | 36827817160 |
10 | 13143020121 |
11 | 563498a600 |
12 | 26696a2509 |
13 | 1315bc88aa |
14 | 8c9758517 |
15 | 51dca32b6 |
hex | 30f629259 |
13143020121 has 96 divisors (see below), whose sum is σ = 25249996800. Its totient is φ = 6606943200.
The previous prime is 13143020117. The next prime is 13143020123. The reversal of 13143020121 is 12102034131.
13143020121 is a `hidden beast` number, since 1 + 31 + 430 + 201 + 2 + 1 = 666.
It is not a de Polignac number, because 13143020121 - 22 = 13143020117 is a prime.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 13143020094 and 13143020103.
It is not an unprimeable number, because it can be changed into a prime (13143020123) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 699670 + ... + 718208.
It is an arithmetic number, because the mean of its divisors is an integer number (263020800).
Almost surely, 213143020121 is an apocalyptic number.
13143020121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
It is an amenable number.
13143020121 is a deficient number, since it is larger than the sum of its proper divisors (12106976679).
13143020121 is a wasteful number, since it uses less digits than its factorization.
13143020121 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 18608 (or 18591 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 18.
Adding to 13143020121 its reverse (12102034131), we get a palindrome (25245054252).
The spelling of 13143020121 in words is "thirteen billion, one hundred forty-three million, twenty thousand, one hundred twenty-one".
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