| Base | Representation |
|---|---|
| bin | 1000001001101… |
| … | …0000000000001 |
| 3 | 2101022210022011 |
| 4 | 2002122000001 |
| 5 | 32222411332 |
| 6 | 3220412521 |
| 7 | 563366233 |
| oct | 202320001 |
| 9 | 71283264 |
| 10 | 34185217 |
| 11 | 18329950 |
| 12 | b547141 |
| 13 | 710bc51 |
| 14 | 477c253 |
| 15 | 3003e47 |
| hex | 209a001 |
34185217 has 4 divisors (see below), whose sum is σ = 37292976. Its totient is φ = 31077460.
The previous prime is 34185211. The next prime is 34185223. The reversal of 34185217 is 71258143.
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: 71258143 = 11 ⋅6478013.
It is an interprime number because it is at equal distance from previous prime (34185211) and next prime (34185223).
It is a cyclic number.
It is not a de Polignac number, because 34185217 - 27 = 34185089 is a prime.
It is a super-2 number, since 2×341852172 = 2337258122674178, which contains 22 as substring.
It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (34185211) 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, 1553863 + ... + 1553884.
It is an arithmetic number, because the mean of its divisors is an integer number (9323244).
It is a Proth number, since it is equal to 4173 ⋅ 213 + 1 and 4173 < 213.
Almost surely, 234185217 is an apocalyptic number.
It is an amenable number.
34185217 is a deficient number, since it is larger than the sum of its proper divisors (3107759).
34185217 is a wasteful number, since it uses less digits than its factorization.
34185217 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3107758.
The product of its digits is 6720, while the sum is 31.
The square root of 34185217 is about 5846.8125504415. The cubic root of 34185217 is about 324.5483810064.
It can be divided in two parts, 341 and 85217, that added together give a palindrome (85558).
The spelling of 34185217 in words is "thirty-four million, one hundred eighty-five thousand, two hundred seventeen".
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