Base | Representation |
---|---|
bin | 100100010011… |
… | …0000000001111 |
3 | 1022210211021222 |
4 | 1020212000033 |
5 | 14332430111 |
6 | 1515513555 |
7 | 320516066 |
oct | 110460017 |
9 | 38724258 |
10 | 19030031 |
11 | a8185a9 |
12 | 64588bb |
13 | 3c33a97 |
14 | 27551dd |
15 | 1a0d7db |
hex | 122600f |
19030031 has 2 divisors, whose sum is σ = 19030032. Its totient is φ = 19030030.
The previous prime is 19030019. The next prime is 19030043. The reversal of 19030031 is 13003091.
It is a balanced prime because it is at equal distance from previous prime (19030019) and next prime (19030043).
It is an emirp because it is prime and its reverse (13003091) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 19030031 - 210 = 19029007 is a prime.
It is a super-2 number, since 2×190300312 = 724284159721922, which contains 22 as substring.
It is a Sophie Germain prime.
It is a junction number, because it is equal to n+sod(n) for n = 19029991 and 19030009.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (19033031) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9515015 + 9515016.
It is an arithmetic number, because the mean of its divisors is an integer number (9515016).
Almost surely, 219030031 is an apocalyptic number.
19030031 is a deficient number, since it is larger than the sum of its proper divisors (1).
19030031 is an equidigital number, since it uses as much as digits as its factorization.
19030031 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 81, while the sum is 17.
The square root of 19030031 is about 4362.3423753759. The cubic root of 19030031 is about 266.9806781830.
The spelling of 19030031 in words is "nineteen million, thirty thousand, thirty-one".
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