| Base | Representation |
|---|---|
| bin | 111100110011011… |
| … | …010100111001111 |
| 3 | 2122002112000122102 |
| 4 | 330303122213033 |
| 5 | 4042122030221 |
| 6 | 245120305315 |
| 7 | 34164542312 |
| oct | 7463324717 |
| 9 | 2562460572 |
| 10 | 1020111311 |
| 11 | 48390a7aa |
| 12 | 24577223b |
| 13 | 13345c17b |
| 14 | 996a4979 |
| 15 | 5e85530b |
| hex | 3ccda9cf |
1020111311 has 4 divisors (see below), whose sum is σ = 1073801400. Its totient is φ = 966421224.
The previous prime is 1020111293. The next prime is 1020111329. The reversal of 1020111311 is 1131110201.
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1131110201 = 13 ⋅87008477.
It is an interprime number because it is at equal distance from previous prime (1020111293) and next prime (1020111329).
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1020111311 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 1020111292 and 1020111301.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1020111011) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26845016 + ... + 26845053.
It is an arithmetic number, because the mean of its divisors is an integer number (268450350).
Almost surely, 21020111311 is an apocalyptic number.
1020111311 is a deficient number, since it is larger than the sum of its proper divisors (53690089).
1020111311 is an equidigital number, since it uses as much as digits as its factorization.
1020111311 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 53690088.
The product of its (nonzero) digits is 6, while the sum is 11.
The square root of 1020111311 is about 31939.1814391039. The cubic root of 1020111311 is about 1006.6593252806.
Adding to 1020111311 its reverse (1131110201), we get a palindrome (2151221512).
It can be divided in two parts, 10201 and 11311, that multiplied together give a palindrome (115383511).
The spelling of 1020111311 in words is "one billion, twenty million, one hundred eleven thousand, three hundred eleven".
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