Base | Representation |
---|---|
bin | 110100101011… |
… | …010010111111 |
3 | 221222120011012 |
4 | 310223102333 |
5 | 12013340311 |
6 | 1211545435 |
7 | 225241661 |
oct | 64532277 |
9 | 27876135 |
10 | 13808831 |
11 | 7881863 |
12 | 475b27b |
13 | 2b2640a |
14 | 1b96531 |
15 | 132b78b |
hex | d2b4bf |
13808831 has 2 divisors, whose sum is σ = 13808832. Its totient is φ = 13808830.
The previous prime is 13808813. The next prime is 13808869. The reversal of 13808831 is 13880831.
Together with previous prime (13808813) it forms an Ormiston pair, because they use the same digits, order apart.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 13808831 - 214 = 13792447 is a prime.
It is a super-2 number, since 2×138088312 = 381367627173122, which contains 22 as substring.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13808731) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6904415 + 6904416.
It is an arithmetic number, because the mean of its divisors is an integer number (6904416).
Almost surely, 213808831 is an apocalyptic number.
13808831 is a deficient number, since it is larger than the sum of its proper divisors (1).
13808831 is an equidigital number, since it uses as much as digits as its factorization.
13808831 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 4608, while the sum is 32.
The square root of 13808831 is about 3716.0235467499. The cubic root of 13808831 is about 239.9121843075.
The spelling of 13808831 in words is "thirteen million, eight hundred eight thousand, eight hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.072 sec. • engine limits •