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130661271 = 321319531109
BaseRepresentation
bin1111100100110…
…11101110010111
3100002212021120100
413302123232113
5231422130041
620544305143
73144413436
oct762335627
9302767510
10130661271
1167833824
12379121b3
13210ba780
14134d311d
15b70e6b6
hex7c9bb97

130661271 has 48 divisors (see below), whose sum is σ = 218181600. Its totient is φ = 74670336.

The previous prime is 130661227. The next prime is 130661273. The reversal of 130661271 is 172166031.

It is not a de Polignac number, because 130661271 - 27 = 130661143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130661273) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 117265 + ... + 118373.

It is an arithmetic number, because the mean of its divisors is an integer number (4545450).

Almost surely, 2130661271 is an apocalyptic number.

130661271 is a deficient number, since it is larger than the sum of its proper divisors (87520329).

130661271 is a wasteful number, since it uses less digits than its factorization.

130661271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 130661271 is about 11430.7161192989. The cubic root of 130661271 is about 507.4371892790.

The spelling of 130661271 in words is "one hundred thirty million, six hundred sixty-one thousand, two hundred seventy-one".

Divisors: 1 3 9 13 19 39 53 57 117 159 171 247 477 689 741 1007 1109 2067 2223 3021 3327 6201 9063 9981 13091 14417 21071 39273 43251 58777 63213 117819 129753 176331 189639 273923 528993 764101 821769 1116763 2292303 2465307 3350289 6876909 10050867 14517919 43553757 130661271