Base | Representation |
---|---|
bin | 111101000001000000… |
… | …0001011000001101000 |
3 | 110112012201020212002012 |
4 | 1322002000023001220 |
5 | 4121322201231440 |
6 | 140105553455052 |
7 | 12316022330351 |
oct | 1720200130150 |
9 | 415181225065 |
10 | 131030102120 |
11 | 5062a0930a5 |
12 | 21489871488 |
13 | c482421308 |
14 | 64b0210d28 |
15 | 361d4dde65 |
hex | 1e8200b068 |
131030102120 has 16 divisors (see below), whose sum is σ = 294817729860. Its totient is φ = 52412040832.
The previous prime is 131030102087. The next prime is 131030102129. The reversal of 131030102120 is 21201030131.
131030102120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 2 ways, for example, as 114748852516 + 16281249604 = 338746^2 + 127598^2 .
It is a junction number, because it is equal to n+sod(n) for n = 131030102095 and 131030102104.
It is not an unprimeable number, because it can be changed into a prime (131030102129) 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, 1637876237 + ... + 1637876316.
Almost surely, 2131030102120 is an apocalyptic number.
131030102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
131030102120 is an abundant number, since it is smaller than the sum of its proper divisors (163787627740).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131030102120 is a wasteful number, since it uses less digits than its factorization.
131030102120 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3275752564 (or 3275752560 counting only the distinct ones).
The product of its (nonzero) digits is 36, while the sum is 14.
Adding to 131030102120 its reverse (21201030131), we get a palindrome (152231132251).
The spelling of 131030102120 in words is "one hundred thirty-one billion, thirty million, one hundred two thousand, one hundred twenty".
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