Base | Representation |
---|---|
bin | 10110111011110101… |
… | …10111110010110100 |
3 | 1011210010022220222210 |
4 | 23131322313302310 |
5 | 200204130212322 |
6 | 5353453053420 |
7 | 614062616433 |
oct | 133572676264 |
9 | 34703286883 |
10 | 12313132212 |
11 | 5249495527 |
12 | 2477787270 |
13 | 1212caca64 |
14 | 84b44d11a |
15 | 4c0ec570c |
hex | 2ddeb7cb4 |
12313132212 has 24 divisors (see below), whose sum is σ = 29124214336. Its totient is φ = 4048152768.
The previous prime is 12313132211. The next prime is 12313132217. The reversal of 12313132212 is 21223131321.
It is a super-2 number, since 2×123131322122 (a number of 21 digits) contains 22 as substring.
It is a nude number because it is divisible by every one of its digits.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12313132211) 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, 7027168 + ... + 7028919.
Almost surely, 212313132212 is an apocalyptic number.
12313132212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
12313132212 is an abundant number, since it is smaller than the sum of its proper divisors (16811082124).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12313132212 is a wasteful number, since it uses less digits than its factorization.
12313132212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 14056167 (or 14056165 counting only the distinct ones).
The product of its digits is 432, while the sum is 21.
Adding to 12313132212 its reverse (21223131321), we get a palindrome (33536263533).
The spelling of 12313132212 in words is "twelve billion, three hundred thirteen million, one hundred thirty-two thousand, two hundred twelve".
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