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130201081 = 1933491933
BaseRepresentation
bin1111100001010…
…11010111111001
3100001222220022021
413300223113321
5231312413311
620530354441
73140455663
oct760532771
9301886267
10130201081
1167549aaa
123772ba21
1320c8917a
1413413533
15b66d171
hex7c2b5f9

130201081 has 8 divisors (see below), whose sum is σ = 131318600. Its totient is φ = 129088512.

The previous prime is 130201073. The next prime is 130201151. The reversal of 130201081 is 180102031.

It can be written as a sum of positive squares in 4 ways, for example, as 26873856 + 103327225 = 5184^2 + 10165^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 130201081 - 23 = 130201073 is a prime.

It is a super-2 number, since 2×1302010812 = 33904642987137122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130201061) 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 in 7 ways as a sum of consecutive naturals, for example, 66391 + ... + 68323.

It is an arithmetic number, because the mean of its divisors is an integer number (16414825).

Almost surely, 2130201081 is an apocalyptic number.

It is an amenable number.

130201081 is a deficient number, since it is larger than the sum of its proper divisors (1117519).

130201081 is a wasteful number, since it uses less digits than its factorization.

130201081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 130201081 is about 11410.5688289410. The cubic root of 130201081 is about 506.8407559564.

The spelling of 130201081 in words is "one hundred thirty million, two hundred one thousand, eighty-one".

Divisors: 1 193 349 1933 67357 373069 674617 130201081