Base | Representation |
---|---|
bin | 101110010001… |
… | …110010001011 |
3 | 211211100020121 |
4 | 232101302023 |
5 | 11101201332 |
6 | 1112004111 |
7 | 205054465 |
oct | 56216213 |
9 | 24740217 |
10 | 12131467 |
11 | 6936607 |
12 | 4090637 |
13 | 2689aaa |
14 | 187b135 |
15 | 10e9797 |
hex | b91c8b |
12131467 has 4 divisors (see below), whose sum is σ = 12166776. Its totient is φ = 12096160.
The previous prime is 12131437. The next prime is 12131473. The reversal of 12131467 is 76413121.
12131467 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76413121 = 53 ⋅1441757.
It is a cyclic number.
It is not a de Polignac number, because 12131467 - 211 = 12129419 is a prime.
It is a Duffinian number.
It is a plaindrome in base 13.
It is not an unprimeable number, because it can be changed into a prime (12131417) 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, 17134 + ... + 17827.
It is an arithmetic number, because the mean of its divisors is an integer number (3041694).
Almost surely, 212131467 is an apocalyptic number.
12131467 is a deficient number, since it is larger than the sum of its proper divisors (35309).
12131467 is an equidigital number, since it uses as much as digits as its factorization.
12131467 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 35308.
The product of its digits is 1008, while the sum is 25.
The square root of 12131467 is about 3483.0255525907. The cubic root of 12131467 is about 229.7758812419.
Adding to 12131467 its reverse (76413121), we get a palindrome (88544588).
The spelling of 12131467 in words is "twelve million, one hundred thirty-one thousand, four hundred sixty-seven".
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