Base | Representation |
---|---|
bin | 110010011010… |
… | …000110110011 |
3 | 220212100101021 |
4 | 302122012303 |
5 | 11340323011 |
6 | 1151120311 |
7 | 220214110 |
oct | 62320663 |
9 | 26770337 |
10 | 13214131 |
11 | 7505a77 |
12 | 4513097 |
13 | 2978818 |
14 | 1a7d907 |
15 | 1260471 |
hex | c9a1b3 |
13214131 has 8 divisors (see below), whose sum is σ = 15181664. Its totient is φ = 11266560.
The previous prime is 13214099. The next prime is 13214137. The reversal of 13214131 is 13141231.
13214131 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 13214131 - 25 = 13214099 is a prime.
It is a super-2 number, since 2×132141312 = 349226516170322, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (13214137) 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, 3540 + ... + 6241.
It is an arithmetic number, because the mean of its divisors is an integer number (1897708).
Almost surely, 213214131 is an apocalyptic number.
13214131 is a deficient number, since it is larger than the sum of its proper divisors (1967533).
13214131 is an equidigital number, since it uses as much as digits as its factorization.
13214131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9981.
The product of its digits is 72, while the sum is 16.
The square root of 13214131 is about 3635.1246195970. The cubic root of 13214131 is about 236.4174539503.
Adding to 13214131 its reverse (13141231), we get a palindrome (26355362).
Subtracting from 13214131 its reverse (13141231), we obtain a square (72900 = 2702).
The spelling of 13214131 in words is "thirteen million, two hundred fourteen thousand, one hundred thirty-one".
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