Base | Representation |
---|---|
bin | 10010111010100100… |
… | …111101111001110101 |
3 | 1221102110002002210111 |
4 | 102322210331321311 |
5 | 313043342401401 |
6 | 13155204223021 |
7 | 1316206121653 |
oct | 227244757165 |
9 | 57373062714 |
10 | 20310122101 |
11 | 8682597385 |
12 | 3b2999aa71 |
13 | 1bb8a0aa39 |
14 | da9571dd3 |
15 | 7dd0c8e51 |
hex | 4ba93de75 |
20310122101 has 4 divisors (see below), whose sum is σ = 21193170912. Its totient is φ = 19427073292.
The previous prime is 20310122089. The next prime is 20310122111. The reversal of 20310122101 is 10122101302.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10122101302 = 2 ⋅5061050651.
It is a cyclic number.
It is not a de Polignac number, because 20310122101 - 29 = 20310121589 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 (20310122111) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441524371 + ... + 441524416.
It is an arithmetic number, because the mean of its divisors is an integer number (5298292728).
Almost surely, 220310122101 is an apocalyptic number.
It is an amenable number.
20310122101 is a deficient number, since it is larger than the sum of its proper divisors (883048811).
20310122101 is an equidigital number, since it uses as much as digits as its factorization.
20310122101 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 883048810.
The product of its (nonzero) digits is 24, while the sum is 13.
Adding to 20310122101 its reverse (10122101302), we get a palindrome (30432223403).
The spelling of 20310122101 in words is "twenty billion, three hundred ten million, one hundred twenty-two thousand, one hundred one".
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