Base | Representation |
---|---|
bin | 1111101000101… |
… | …01110000101010 |
3 | 100010210200020122 |
4 | 13310111300222 |
5 | 232034124010 |
6 | 21003123242 |
7 | 3151564652 |
oct | 764256052 |
9 | 303720218 |
10 | 131161130 |
11 | 68045331 |
12 | 37b13522 |
13 | 21234149 |
14 | 135c3362 |
15 | b7ac855 |
hex | 7d15c2a |
131161130 has 32 divisors (see below), whose sum is σ = 242066880. Its totient is φ = 51151360.
The previous prime is 131161109. The next prime is 131161133. The reversal of 131161130 is 31161131.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 131161099 and 131161108.
It is not an unprimeable number, because it can be changed into a prime (131161133) 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, 76442 + ... + 78138.
It is an arithmetic number, because the mean of its divisors is an integer number (7564590).
Almost surely, 2131161130 is an apocalyptic number.
131161130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
131161130 is a deficient number, since it is larger than the sum of its proper divisors (110905750).
131161130 is a wasteful number, since it uses less digits than its factorization.
131161130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1894.
The product of its (nonzero) digits is 54, while the sum is 17.
The square root of 131161130 is about 11452.5599758307. The cubic root of 131161130 is about 508.0834513739.
Subtracting from 131161130 its reverse (31161131), we obtain a palindrome (99999999).
The spelling of 131161130 in words is "one hundred thirty-one million, one hundred sixty-one thousand, one hundred thirty".
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