Base | Representation |
---|---|
bin | 111101000110010111… |
… | …1000000100100010100 |
3 | 110112200021001100101010 |
4 | 1322030233000210110 |
5 | 4122204244332322 |
6 | 140135504532220 |
7 | 12323336614626 |
oct | 1721457004424 |
9 | 415607040333 |
10 | 131210152212 |
11 | 5071178a427 |
12 | 2151a021070 |
13 | c4b0811c29 |
14 | 64ca0bcc16 |
15 | 362e20720c |
hex | 1e8cbc0914 |
131210152212 has 12 divisors (see below), whose sum is σ = 306157021856. Its totient is φ = 43736717400.
The previous prime is 131210152187. The next prime is 131210152231. The reversal of 131210152212 is 212251012131.
It is a tau number, because it is divible by the number of its divisors (12).
It is a super-2 number, since 2×1312101522122 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5467089664 + ... + 5467089687.
Almost surely, 2131210152212 is an apocalyptic number.
131210152212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
131210152212 is an abundant number, since it is smaller than the sum of its proper divisors (174946869644).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131210152212 is a wasteful number, since it uses less digits than its factorization.
131210152212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10934179358 (or 10934179356 counting only the distinct ones).
The product of its (nonzero) digits is 240, while the sum is 21.
Adding to 131210152212 its reverse (212251012131), we get a palindrome (343461164343).
The spelling of 131210152212 in words is "one hundred thirty-one billion, two hundred ten million, one hundred fifty-two thousand, two hundred twelve".
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