Base | Representation |
---|---|
bin | 101100000101… |
… | …0001011101101 |
3 | 1121111010111001 |
4 | 1120022023231 |
5 | 21404013011 |
6 | 2143200301 |
7 | 400302130 |
oct | 130121355 |
9 | 47433431 |
10 | 23110381 |
11 | 12055198 |
12 | 78a6091 |
13 | 4a320a8 |
14 | 30d8217 |
15 | 20677c1 |
hex | 160a2ed |
23110381 has 8 divisors (see below), whose sum is σ = 26452224. Its totient is φ = 19778640.
The previous prime is 23110379. The next prime is 23110397. The reversal of 23110381 is 18301132.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 23110381 - 21 = 23110379 is a prime.
It is a super-2 number, since 2×231103812 = 1068179419930322, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (21110381) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3276 + ... + 7546.
It is an arithmetic number, because the mean of its divisors is an integer number (3306528).
Almost surely, 223110381 is an apocalyptic number.
It is an amenable number.
23110381 is a deficient number, since it is larger than the sum of its proper divisors (3341843).
23110381 is an equidigital number, since it uses as much as digits as its factorization.
23110381 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5051.
The product of its (nonzero) digits is 144, while the sum is 19.
The square root of 23110381 is about 4807.3257638733. The cubic root of 23110381 is about 284.8409125474.
Subtracting from 23110381 its reverse (18301132), we obtain a square (4809249 = 21932).
The spelling of 23110381 in words is "twenty-three million, one hundred ten thousand, three hundred eighty-one".
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