Base | Representation |
---|---|
bin | 111101011011001… |
… | …010101110000001 |
3 | 2122211010110002201 |
4 | 331123022232001 |
5 | 4102304010334 |
6 | 250131513201 |
7 | 34352243245 |
oct | 7533125601 |
9 | 2584113081 |
10 | 1030531969 |
11 | 489787a15 |
12 | 249158801 |
13 | 13566a33c |
14 | 9ac18425 |
15 | 60712c14 |
hex | 3d6cab81 |
1030531969 has 2 divisors, whose sum is σ = 1030531970. Its totient is φ = 1030531968.
The previous prime is 1030531949. The next prime is 1030532003. The reversal of 1030531969 is 9691350301.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 888040000 + 142491969 = 29800^2 + 11937^2 .
It is an emirp because it is prime and its reverse (9691350301) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1030531969 - 29 = 1030531457 is a prime.
It is a super-2 number, since 2×10305319692 = 2123992278262033922, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (1030531939) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515265984 + 515265985.
It is an arithmetic number, because the mean of its divisors is an integer number (515265985).
Almost surely, 21030531969 is an apocalyptic number.
It is an amenable number.
1030531969 is a deficient number, since it is larger than the sum of its proper divisors (1).
1030531969 is an equidigital number, since it uses as much as digits as its factorization.
1030531969 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 21870, while the sum is 37.
The square root of 1030531969 is about 32101.8997724434. The cubic root of 1030531969 is about 1010.0754670271.
The spelling of 1030531969 in words is "one billion, thirty million, five hundred thirty-one thousand, nine hundred sixty-nine".
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