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128130283 is a prime number
BaseRepresentation
bin1111010001100…
…01110011101011
322221002200201001
413220301303223
5230300132113
620414135431
73114042451
oct750616353
9287080631
10128130283
11663651a6
1236ab1577
1320712748
14130349d1
15b3ae7dd
hex7a31ceb

128130283 has 2 divisors, whose sum is σ = 128130284. Its totient is φ = 128130282.

The previous prime is 128130271. The next prime is 128130311. The reversal of 128130283 is 382031821.

It is an a-pointer prime, because the next prime (128130311) can be obtained adding 128130283 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (382031821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128130283 - 25 = 128130251 is a prime.

It is not a weakly prime, because it can be changed into another prime (128130083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64065141 + 64065142.

It is an arithmetic number, because the mean of its divisors is an integer number (64065142).

Almost surely, 2128130283 is an apocalyptic number.

128130283 is a deficient number, since it is larger than the sum of its proper divisors (1).

128130283 is an equidigital number, since it uses as much as digits as its factorization.

128130283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 128130283 is about 11319.4647841671. The cubic root of 128130283 is about 504.1393477020.

The spelling of 128130283 in words is "one hundred twenty-eight million, one hundred thirty thousand, two hundred eighty-three".