Base | Representation |
---|---|
bin | 111111100010010… |
… | …0101111100001111 |
3 | 12111120120021022000 |
4 | 1333010211330033 |
5 | 13331232113130 |
6 | 551314123343 |
7 | 103554640155 |
oct | 17704457417 |
9 | 5446507260 |
10 | 2131910415 |
11 | 9a4453938 |
12 | 4b5b80553 |
13 | 27c8b156b |
14 | 1631d53d5 |
15 | c726c260 |
hex | 7f125f0f |
2131910415 has 128 divisors (see below), whose sum is σ = 4165862400. Its totient is φ = 1030164480.
The previous prime is 2131910383. The next prime is 2131910461. The reversal of 2131910415 is 5140191312.
It is a happy number.
It is not a de Polignac number, because 2131910415 - 25 = 2131910383 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
Together with 2033951985 it forms an amicable pair .
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13079124 + ... + 13079286.
It is an arithmetic number, because the mean of its divisors is an integer number (32545800).
Almost surely, 22131910415 is an apocalyptic number.
2131910415 is a deficient number, since it is larger than the sum of its proper divisors (2033951985).
2131910415 is a wasteful number, since it uses less digits than its factorization.
2131910415 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 374 (or 368 counting only the distinct ones).
The product of its (nonzero) digits is 1080, while the sum is 27.
The square root of 2131910415 is about 46172.6154229972. The cubic root of 2131910415 is about 1287.0329048699.
The spelling of 2131910415 in words is "two billion, one hundred thirty-one million, nine hundred ten thousand, four hundred fifteen".
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