Base | Representation |
---|---|
bin | 1111100111101… |
… | …01101111111101 |
3 | 100010120000101110 |
4 | 13303311233331 |
5 | 232020430023 |
6 | 21000232233 |
7 | 3150510462 |
oct | 763655775 |
9 | 303500343 |
10 | 131030013 |
11 | 67a65874 |
12 | 37a6b679 |
13 | 211b956a |
14 | 1358b669 |
15 | b783a93 |
hex | 7cf5bfd |
131030013 has 16 divisors (see below), whose sum is σ = 178367552. Its totient is φ = 85536000.
The previous prime is 131029993. The next prime is 131030047. The reversal of 131030013 is 310030131.
It is not a de Polignac number, because 131030013 - 26 = 131029949 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131030083) 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, 42618 + ... + 45588.
It is an arithmetic number, because the mean of its divisors is an integer number (11147972).
Almost surely, 2131030013 is an apocalyptic number.
It is an amenable number.
131030013 is a deficient number, since it is larger than the sum of its proper divisors (47337539).
131030013 is a wasteful number, since it uses less digits than its factorization.
131030013 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3276.
The product of its (nonzero) digits is 27, while the sum is 12.
The square root of 131030013 is about 11446.8341911639. The cubic root of 131030013 is about 507.9140907590.
Adding to 131030013 its reverse (310030131), we get a palindrome (441060144).
The spelling of 131030013 in words is "one hundred thirty-one million, thirty thousand, thirteen".
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