Base | Representation |
---|---|
bin | 1001000111010… |
… | …0000010011111 |
3 | 2122220222111212 |
4 | 2101310002133 |
5 | 34241132111 |
6 | 3443135035 |
7 | 642620216 |
oct | 221640237 |
9 | 78828455 |
10 | 38224031 |
11 | 1a63830a |
12 | 1097447b |
13 | 7bc4391 |
14 | 511007d |
15 | 355098b |
hex | 247409f |
38224031 has 2 divisors, whose sum is σ = 38224032. Its totient is φ = 38224030.
The previous prime is 38224009. The next prime is 38224051. The reversal of 38224031 is 13042283.
It is a strong prime.
It is an emirp because it is prime and its reverse (13042283) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 38224031 - 210 = 38223007 is a prime.
It is a super-2 number, since 2×382240312 = 2922153091777922, which contains 22 as substring.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 38223988 and 38224006.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (38224051) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19112015 + 19112016.
It is an arithmetic number, because the mean of its divisors is an integer number (19112016).
Almost surely, 238224031 is an apocalyptic number.
38224031 is a deficient number, since it is larger than the sum of its proper divisors (1).
38224031 is an equidigital number, since it uses as much as digits as its factorization.
38224031 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1152, while the sum is 23.
The square root of 38224031 is about 6182.5586127428. The cubic root of 38224031 is about 336.8569366367.
The spelling of 38224031 in words is "thirty-eight million, two hundred twenty-four thousand, thirty-one".
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