Base | Representation |
---|---|
bin | 1111100111100… |
… | …11010101001100 |
3 | 100010112111210121 |
4 | 13303303111030 |
5 | 232020120413 |
6 | 21000114324 |
7 | 3150436552 |
oct | 763632514 |
9 | 303474717 |
10 | 131020108 |
11 | 67a5938a |
12 | 37a659a4 |
13 | 211b4bbb |
14 | 13587bd2 |
15 | b780b8d |
hex | 7cf354c |
131020108 has 48 divisors (see below), whose sum is σ = 243609184. Its totient is φ = 61585920.
The previous prime is 131020103. The next prime is 131020117. The reversal of 131020108 is 801020131.
It is a junction number, because it is equal to n+sod(n) for n = 131020091 and 131020100.
It is not an unprimeable number, because it can be changed into a prime (131020103) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723778 + ... + 723958.
Almost surely, 2131020108 is an apocalyptic number.
It is an amenable number.
131020108 is a deficient number, since it is larger than the sum of its proper divisors (112589076).
131020108 is a wasteful number, since it uses less digits than its factorization.
131020108 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 362 (or 360 counting only the distinct ones).
The product of its (nonzero) digits is 48, while the sum is 16.
The square root of 131020108 is about 11446.4015306121. The cubic root of 131020108 is about 507.9012921242.
Adding to 131020108 its reverse (801020131), we get a palindrome (932040239).
The spelling of 131020108 in words is "one hundred thirty-one million, twenty thousand, one hundred eight".
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