Base | Representation |
---|---|
bin | 10110111101010010… |
… | …00100110111011101 |
3 | 1011210222010021202122 |
4 | 23132221010313131 |
5 | 200220230310011 |
6 | 5355004432325 |
7 | 614300564042 |
oct | 133651046735 |
9 | 34728107678 |
10 | 12325244381 |
11 | 525530858a |
12 | 247b8486a5 |
13 | 1215660b18 |
14 | 84ccc31c9 |
15 | 4c20b93db |
hex | 2dea44ddd |
12325244381 has 4 divisors (see below), whose sum is σ = 12658359132. Its totient is φ = 11992129632.
The previous prime is 12325244333. The next prime is 12325244419. The reversal of 12325244381 is 18344252321.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18344252321 = 71 ⋅258369751.
It can be written as a sum of positive squares in 2 ways, for example, as 11255300281 + 1069944100 = 106091^2 + 32710^2 .
It is a cyclic number.
It is not a de Polignac number, because 12325244381 - 218 = 12324982237 is a prime.
It is a super-2 number, since 2×123252443812 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12325244081) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166557320 + ... + 166557393.
It is an arithmetic number, because the mean of its divisors is an integer number (3164589783).
Almost surely, 212325244381 is an apocalyptic number.
It is an amenable number.
12325244381 is a deficient number, since it is larger than the sum of its proper divisors (333114751).
12325244381 is an equidigital number, since it uses as much as digits as its factorization.
12325244381 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 333114750.
The product of its digits is 46080, while the sum is 35.
The spelling of 12325244381 in words is "twelve billion, three hundred twenty-five million, two hundred forty-four thousand, three hundred eighty-one".
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