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130934081 = 1071223683
BaseRepresentation
bin1111100110111…
…10010101000001
3100010101010210102
413303132111001
5232004342311
620554212145
73146631005
oct763362501
9303333712
10130934081
11679aa793
1237a24055
13211849b5
1413564705
15b76543b
hex7cde541

130934081 has 4 divisors (see below), whose sum is σ = 132157872. Its totient is φ = 129710292.

The previous prime is 130934071. The next prime is 130934087. The reversal of 130934081 is 180439031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180439031 = 683326407.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130934081 is a prime.

It is a super-2 number, since 2×1309340812 = 34287467134629122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130934087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611735 + ... + 611948.

It is an arithmetic number, because the mean of its divisors is an integer number (33039468).

Almost surely, 2130934081 is an apocalyptic number.

It is an amenable number.

130934081 is a deficient number, since it is larger than the sum of its proper divisors (1223791).

130934081 is a wasteful number, since it uses less digits than its factorization.

130934081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223790.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 130934081 is about 11442.6430950196. The cubic root of 130934081 is about 507.7901061607.

The spelling of 130934081 in words is "one hundred thirty million, nine hundred thirty-four thousand, eighty-one".

Divisors: 1 107 1223683 130934081