Base | Representation |
---|---|
bin | 111101011101011… |
… | …000010110100101 |
3 | 2122212012220220002 |
4 | 331131120112211 |
5 | 4102431041401 |
6 | 250152151045 |
7 | 34360210505 |
oct | 7535302645 |
9 | 2585186802 |
10 | 1031112101 |
11 | 48a043868 |
12 | 249398485 |
13 | 135811406 |
14 | 9ad29a05 |
15 | 607c9a6b |
hex | 3d7585a5 |
1031112101 has 8 divisors (see below), whose sum is σ = 1098722520. Its totient is φ = 964274688.
The previous prime is 1031112073. The next prime is 1031112109. The reversal of 1031112101 is 1012111301.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 54612100 + 976500001 = 7390^2 + 31249^2 .
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 1031112101 - 222 = 1026917797 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 (1031112109) 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, 190496 + ... + 195833.
It is an arithmetic number, because the mean of its divisors is an integer number (137340315).
Almost surely, 21031112101 is an apocalyptic number.
It is an amenable number.
1031112101 is a deficient number, since it is larger than the sum of its proper divisors (67610419).
1031112101 is a wasteful number, since it uses less digits than its factorization.
1031112101 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 386503.
The product of its (nonzero) digits is 6, while the sum is 11.
The square root of 1031112101 is about 32110.9342903628. The cubic root of 1031112101 is about 1010.2649701819.
Adding to 1031112101 its reverse (1012111301), we get a palindrome (2043223402).
The spelling of 1031112101 in words is "one billion, thirty-one million, one hundred twelve thousand, one hundred one".
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