Base | Representation |
---|---|
bin | 111100110011110… |
… | …000100001000111 |
3 | 2122002200120201101 |
4 | 330303300201013 |
5 | 4042132413111 |
6 | 245122240531 |
7 | 34165365013 |
oct | 7463604107 |
9 | 2562616641 |
10 | 1020201031 |
11 | 483971153 |
12 | 2457b6147 |
13 | 133490c65 |
14 | 996c9543 |
15 | 5e871bc1 |
hex | 3ccf0847 |
1020201031 has 2 divisors, whose sum is σ = 1020201032. Its totient is φ = 1020201030.
The previous prime is 1020201019. The next prime is 1020201043. The reversal of 1020201031 is 1301020201.
1020201031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a balanced prime because it is at equal distance from previous prime (1020201019) and next prime (1020201043).
It is a cyclic number.
It is not a de Polignac number, because 1020201031 - 25 = 1020200999 is a prime.
It is a super-2 number, since 2×10202010312 = 2081620287306925922, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 1020200999 and 1020201017.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1020201071) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510100515 + 510100516.
It is an arithmetic number, because the mean of its divisors is an integer number (510100516).
Almost surely, 21020201031 is an apocalyptic number.
1020201031 is a deficient number, since it is larger than the sum of its proper divisors (1).
1020201031 is an equidigital number, since it uses as much as digits as its factorization.
1020201031 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 12, while the sum is 10.
The square root of 1020201031 is about 31940.5859526716. The cubic root of 1020201031 is about 1006.6888367094.
Adding to 1020201031 its reverse (1301020201), we get a palindrome (2321221232).
The spelling of 1020201031 in words is "one billion, twenty million, two hundred one thousand, thirty-one".
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