Base | Representation |
---|---|
bin | 1110101011011… |
… | …01000010100111 |
3 | 22120200122122020 |
4 | 13111231002213 |
5 | 223010130043 |
6 | 20115034223 |
7 | 3023405442 |
oct | 725550247 |
9 | 276618566 |
10 | 123130023 |
11 | 6355a455 |
12 | 3529b973 |
13 | 1c681803 |
14 | 124d2659 |
15 | ac22e83 |
hex | 756d0a7 |
123130023 has 8 divisors (see below), whose sum is σ = 164320368. Its totient is φ = 82013184.
The previous prime is 123130003. The next prime is 123130039. The reversal of 123130023 is 320031321.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 123130023 - 26 = 123129959 is a prime.
It is a super-2 number, since 2×1231300232 = 30322005127961058, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 123129984 and 123130011.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (123130003) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14340 + ... + 21257.
It is an arithmetic number, because the mean of its divisors is an integer number (20540046).
Almost surely, 2123130023 is an apocalyptic number.
123130023 is a deficient number, since it is larger than the sum of its proper divisors (41190345).
123130023 is a wasteful number, since it uses less digits than its factorization.
123130023 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 36753.
The product of its (nonzero) digits is 108, while the sum is 15.
The square root of 123130023 is about 11096.3968476258. The cubic root of 123130023 is about 497.4941598432.
Adding to 123130023 its reverse (320031321), we get a palindrome (443161344).
The spelling of 123130023 in words is "one hundred twenty-three million, one hundred thirty thousand, twenty-three".
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