Base | Representation |
---|---|
bin | 11011100100011… |
… | …10111101000111 |
3 | 121010011211220101 |
4 | 31302032331013 |
5 | 433201203023 |
6 | 34540544531 |
7 | 5505532105 |
oct | 1562167507 |
9 | 533154811 |
10 | 231272263 |
11 | 109602302 |
12 | 65552147 |
13 | 38bb63c1 |
14 | 22a02c75 |
15 | 154851ad |
hex | dc8ef47 |
231272263 has 8 divisors (see below), whose sum is σ = 234497600. Its totient is φ = 228054528.
The previous prime is 231272221. The next prime is 231272299. The reversal of 231272263 is 362272132.
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 231272263 - 225 = 197717831 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (231272203) 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 in 7 ways as a sum of consecutive naturals, for example, 87895 + ... + 90487.
It is an arithmetic number, because the mean of its divisors is an integer number (29312200).
Almost surely, 2231272263 is an apocalyptic number.
231272263 is a deficient number, since it is larger than the sum of its proper divisors (3225337).
231272263 is a wasteful number, since it uses less digits than its factorization.
231272263 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3801.
The product of its digits is 6048, while the sum is 28.
The square root of 231272263 is about 15207.6383110593. The cubic root of 231272263 is about 613.8202098201.
It can be divided in two parts, 2 and 31272263, that multiplied together give a palindrome (62544526).
The spelling of 231272263 in words is "two hundred thirty-one million, two hundred seventy-two thousand, two hundred sixty-three".
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