Base | Representation |
---|---|
bin | 10110100010111001… |
… | …01001010111110111 |
3 | 1011020112120220222111 |
4 | 23101130221113313 |
5 | 144242043212411 |
6 | 5321020111451 |
7 | 605642205250 |
oct | 132134512767 |
9 | 34215526874 |
10 | 12103882231 |
11 | 5151364961 |
12 | 2419695587 |
13 | 11ab8373bc |
14 | 82b73db27 |
15 | 4ac940721 |
hex | 2d17295f7 |
12103882231 has 4 divisors (see below), whose sum is σ = 13833008272. Its totient is φ = 10374756192.
The previous prime is 12103882213. The next prime is 12103882243. The reversal of 12103882231 is 13228830121.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 12103882231 - 211 = 12103880183 is a prime.
It is a super-2 number, since 2×121038822312 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 12103882193 and 12103882202.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12103882291) 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, 864563010 + ... + 864563023.
It is an arithmetic number, because the mean of its divisors is an integer number (3458252068).
Almost surely, 212103882231 is an apocalyptic number.
12103882231 is a deficient number, since it is larger than the sum of its proper divisors (1729126041).
12103882231 is an equidigital number, since it uses as much as digits as its factorization.
12103882231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1729126040.
The product of its (nonzero) digits is 4608, while the sum is 31.
The spelling of 12103882231 in words is "twelve billion, one hundred three million, eight hundred eighty-two thousand, two hundred thirty-one".
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