Base | Representation |
---|---|
bin | 11011100011001… |
… | …01101000101111 |
3 | 121002212020202020 |
4 | 31301211220233 |
5 | 433130244043 |
6 | 34533201223 |
7 | 5504225514 |
oct | 1561455057 |
9 | 532766666 |
10 | 231103023 |
11 | 1094a7138 |
12 | 65490213 |
13 | 38b57368 |
14 | 2299b30b |
15 | 1544ee83 |
hex | dc65a2f |
231103023 has 16 divisors (see below), whose sum is σ = 326544000. Its totient is φ = 144974880.
The previous prime is 231103021. The next prime is 231103063. The reversal of 231103023 is 320301132.
It is not a de Polignac number, because 231103023 - 21 = 231103021 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 231102993 and 231103011.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (231103021) 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, 5113 + ... + 22098.
It is an arithmetic number, because the mean of its divisors is an integer number (20409000).
Almost surely, 2231103023 is an apocalyptic number.
231103023 is a deficient number, since it is larger than the sum of its proper divisors (95440977).
231103023 is a wasteful number, since it uses less digits than its factorization.
231103023 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 27382.
The product of its (nonzero) digits is 108, while the sum is 15.
The square root of 231103023 is about 15202.0729836427. The cubic root of 231103023 is about 613.6704465339.
Adding to 231103023 its reverse (320301132), we get a palindrome (551404155).
The spelling of 231103023 in words is "two hundred thirty-one million, one hundred three thousand, twenty-three".
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