Base | Representation |
---|---|
bin | 101111110000010… |
… | …011110100001111 |
3 | 2001211120211111101 |
4 | 233300103310033 |
5 | 3120101140411 |
6 | 211300203531 |
7 | 25566013216 |
oct | 5760236417 |
9 | 2054524441 |
10 | 801193231 |
11 | 381286373 |
12 | 1a43995a7 |
13 | c9cb0047 |
14 | 7859a07d |
15 | 4a5108c1 |
hex | 2fc13d0f |
801193231 has 2 divisors, whose sum is σ = 801193232. Its totient is φ = 801193230.
The previous prime is 801193213. The next prime is 801193313. The reversal of 801193231 is 132391108.
Together with previous prime (801193213) 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 801193231 - 25 = 801193199 is a prime.
It is a super-2 number, since 2×8011932312 = 1283821186800438722, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 801193231.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (801193531) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400596615 + 400596616.
It is an arithmetic number, because the mean of its divisors is an integer number (400596616).
Almost surely, 2801193231 is an apocalyptic number.
801193231 is a deficient number, since it is larger than the sum of its proper divisors (1).
801193231 is an equidigital number, since it uses as much as digits as its factorization.
801193231 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1296, while the sum is 28.
The square root of 801193231 is about 28305.3569311535. The cubic root of 801193231 is about 928.7790780844.
The spelling of 801193231 in words is "eight hundred one million, one hundred ninety-three thousand, two hundred thirty-one".
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