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130971208 = 2316371401
BaseRepresentation
bin1111100111001…
…11011001001000
3100010110000201111
413303213121020
5232012034313
620555100104
73150144154
oct763473110
9303400644
10130971208
1167a25675
1237a41634
1321198874
1413574064
15b77143d
hex7ce7648

130971208 has 8 divisors (see below), whose sum is σ = 245571030. Its totient is φ = 65485600.

The previous prime is 130971193. The next prime is 130971233. The reversal of 130971208 is 802179031.

It can be written as a sum of positive squares in only one way, i.e., 107371044 + 23600164 = 10362^2 + 4858^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 130971208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8185693 + ... + 8185708.

Almost surely, 2130971208 is an apocalyptic number.

It is an amenable number.

130971208 is a deficient number, since it is larger than the sum of its proper divisors (114599822).

130971208 is a wasteful number, since it uses less digits than its factorization.

130971208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16371407 (or 16371403 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 130971208 is about 11444.2652887811. The cubic root of 130971208 is about 507.8380970823.

The spelling of 130971208 in words is "one hundred thirty million, nine hundred seventy-one thousand, two hundred eight".

Divisors: 1 2 4 8 16371401 32742802 65485604 130971208