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130927261 is a prime number
BaseRepresentation
bin1111100110111…
…00101010011101
3100010100210102211
413303130222131
5232004133021
620554120421
73146602063
oct763345235
9303323384
10130927261
11679a5653
1237a20111
132118186a
1413562033
15b7633e1
hex7cdca9d

130927261 has 2 divisors, whose sum is σ = 130927262. Its totient is φ = 130927260.

The previous prime is 130927259. The next prime is 130927267. The reversal of 130927261 is 162729031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98505625 + 32421636 = 9925^2 + 5694^2 .

It is an emirp because it is prime and its reverse (162729031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130927261 - 21 = 130927259 is a prime.

Together with 130927259, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130927267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65463630 + 65463631.

It is an arithmetic number, because the mean of its divisors is an integer number (65463631).

Almost surely, 2130927261 is an apocalyptic number.

It is an amenable number.

130927261 is a deficient number, since it is larger than the sum of its proper divisors (1).

130927261 is an equidigital number, since it uses as much as digits as its factorization.

130927261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 130927261 is about 11442.3450830675. The cubic root of 130927261 is about 507.7812895393.

The spelling of 130927261 in words is "one hundred thirty million, nine hundred twenty-seven thousand, two hundred sixty-one".