Base | Representation |
---|---|
bin | 1111101110010… |
… | …11111000111010 |
3 | 100012012120120021 |
4 | 13313023320322 |
5 | 232232012010 |
6 | 21031121054 |
7 | 3161122615 |
oct | 767137072 |
9 | 305176507 |
10 | 131907130 |
11 | 68504863 |
12 | 3821318a |
13 | 21435874 |
14 | 1373917c |
15 | b8a88da |
hex | 7dcbe3a |
131907130 has 8 divisors (see below), whose sum is σ = 237432852. Its totient is φ = 52762848.
The previous prime is 131907103. The next prime is 131907133. The reversal of 131907130 is 31709131.
It can be written as a sum of positive squares in 2 ways, for example, as 128300929 + 3606201 = 11327^2 + 1899^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a junction number, because it is equal to n+sod(n) for n = 131907095 and 131907104.
It is not an unprimeable number, because it can be changed into a prime (131907133) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6595347 + ... + 6595366.
Almost surely, 2131907130 is an apocalyptic number.
131907130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
131907130 is a deficient number, since it is larger than the sum of its proper divisors (105525722).
131907130 is a wasteful number, since it uses less digits than its factorization.
131907130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13190720.
The product of its (nonzero) digits is 567, while the sum is 25.
The square root of 131907130 is about 11485.0829339626. The cubic root of 131907130 is about 509.0448996279.
The spelling of 131907130 in words is "one hundred thirty-one million, nine hundred seven thousand, one hundred thirty".
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