Base | Representation |
---|---|
bin | 101110010001… |
… | …111000100011 |
3 | 211211100210201 |
4 | 232101320203 |
5 | 11101210000 |
6 | 1112010031 |
7 | 205055620 |
oct | 56217043 |
9 | 24740721 |
10 | 12131875 |
11 | 6936948 |
12 | 4090917 |
13 | 268a032 |
14 | 187b347 |
15 | 10e996a |
hex | b91e23 |
12131875 has 40 divisors (see below), whose sum is σ = 17994240. Its totient is φ = 8004000.
The previous prime is 12131849. The next prime is 12131909. The reversal of 12131875 is 57813121.
12131875 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 12131875 - 219 = 11607587 is a prime.
12131875 is strictly pandigital in base 8.
It is an unprimeable number.
It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 205596 + ... + 205654.
It is an arithmetic number, because the mean of its divisors is an integer number (449856).
Almost surely, 212131875 is an apocalyptic number.
12131875 is a deficient number, since it is larger than the sum of its proper divisors (5862365).
12131875 is an frugal number, since it uses more digits than its factorization.
12131875 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 133 (or 118 counting only the distinct ones).
The product of its digits is 1680, while the sum is 28.
The square root of 12131875 is about 3483.0841218667. The cubic root of 12131875 is about 229.7784571192.
Adding to 12131875 its reverse (57813121), we get a palindrome (69944996).
The spelling of 12131875 in words is "twelve million, one hundred thirty-one thousand, eight hundred seventy-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.072 sec. • engine limits •