Base | Representation |
---|---|
bin | 111001010100101110… |
… | …1010111010001101110 |
3 | 102202202012101012122200 |
4 | 1302221131113101232 |
5 | 4004103121200220 |
6 | 132315145522330 |
7 | 11615404565004 |
oct | 1625135272156 |
9 | 382665335580 |
10 | 123102131310 |
11 | 48230a42304 |
12 | 1ba367a33a6 |
13 | b7baaaa522 |
14 | 5d5b336a74 |
15 | 33074c0890 |
hex | 1ca975746e |
123102131310 has 48 divisors (see below), whose sum is σ = 328715970336. Its totient is φ = 31940011584.
The previous prime is 123102131239. The next prime is 123102131323. The reversal of 123102131310 is 13131201321.
123102131310 is a `hidden beast` number, since 12 + 310 + 2 + 1 + 31 + 310 = 666.
It is a super-2 number, since 2×1231021313102 (a number of 23 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18480474 + ... + 18487133.
It is an arithmetic number, because the mean of its divisors is an integer number (6848249382).
Almost surely, 2123102131310 is an apocalyptic number.
123102131310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
123102131310 is an abundant number, since it is smaller than the sum of its proper divisors (205613839026).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
123102131310 is a wasteful number, since it uses less digits than its factorization.
123102131310 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 36967657 (or 36967654 counting only the distinct ones).
The product of its (nonzero) digits is 108, while the sum is 18.
Adding to 123102131310 its reverse (13131201321), we get a palindrome (136233332631).
The spelling of 123102131310 in words is "one hundred twenty-three billion, one hundred two million, one hundred thirty-one thousand, three hundred ten".
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