Base | Representation |
---|---|
bin | 1111101101100… |
… | …01110000011111 |
3 | 100012000010202000 |
4 | 13312301300133 |
5 | 232220100340 |
6 | 21024533343 |
7 | 3160165560 |
oct | 766616037 |
9 | 305003660 |
10 | 131800095 |
11 | 684413a9 |
12 | 38181253 |
13 | 213c8c2b |
14 | 1370c167 |
15 | b886d30 |
hex | 7db1c1f |
131800095 has 64 divisors (see below), whose sum is σ = 269460480. Its totient is φ = 59875200.
The previous prime is 131800091. The next prime is 131800103. The reversal of 131800095 is 590008131.
It is not a de Polignac number, because 131800095 - 22 = 131800091 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131800091) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 199065 + ... + 199725.
It is an arithmetic number, because the mean of its divisors is an integer number (4210320).
Almost surely, 2131800095 is an apocalyptic number.
131800095 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
131800095 is an abundant number, since it is smaller than the sum of its proper divisors (137660385).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131800095 is a wasteful number, since it uses less digits than its factorization.
131800095 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 893 (or 887 counting only the distinct ones).
The product of its (nonzero) digits is 1080, while the sum is 27.
The square root of 131800095 is about 11480.4222483322. The cubic root of 131800095 is about 508.9071755469.
The spelling of 131800095 in words is "one hundred thirty-one million, eight hundred thousand, ninety-five".
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