Base | Representation |
---|---|
bin | 11011100010011… |
… | …11001011000100 |
3 | 121002200120112102 |
4 | 31301033023010 |
5 | 433114323022 |
6 | 34531211232 |
7 | 5503363331 |
oct | 1561171304 |
9 | 532616472 |
10 | 231011012 |
11 | 109443aa1 |
12 | 65446b18 |
13 | 38b2450b |
14 | 22975988 |
15 | 15432a92 |
hex | dc4f2c4 |
231011012 has 12 divisors (see below), whose sum is σ = 404700156. Its totient is φ = 115382400.
The previous prime is 231011009. The next prime is 231011021. The reversal of 231011012 is 210110132.
231011012 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 can be written as a sum of positive squares in 2 ways, for example, as 171505216 + 59505796 = 13096^2 + 7714^2 .
It is a junction number, because it is equal to n+sod(n) for n = 231010984 and 231011002.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26489 + ... + 34112.
It is an arithmetic number, because the mean of its divisors is an integer number (33725013).
Almost surely, 2231011012 is an apocalyptic number.
It is an amenable number.
231011012 is a deficient number, since it is larger than the sum of its proper divisors (173689144).
231011012 is a wasteful number, since it uses less digits than its factorization.
231011012 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 61558 (or 61556 counting only the distinct ones).
The product of its (nonzero) digits is 12, while the sum is 11.
The square root of 231011012 is about 15199.0464174566. The cubic root of 231011012 is about 613.5889937891.
Adding to 231011012 its reverse (210110132), we get a palindrome (441121144).
The spelling of 231011012 in words is "two hundred thirty-one million, eleven thousand, twelve".
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