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130161443 = 244153323
BaseRepresentation
bin1111100001000…
…01101100100011
3100001220212221012
413300201230203
5231310131233
620525451135
73140232266
oct760415443
9301825835
10130161443
1167522245
1237710aab
1320c74109
1413402cdd
15b661548
hex7c21b23

130161443 has 4 divisors (see below), whose sum is σ = 130217208. Its totient is φ = 130105680.

The previous prime is 130161433. The next prime is 130161491. The reversal of 130161443 is 344161031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130161443 - 210 = 130160419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130161403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24221 + ... + 29102.

It is an arithmetic number, because the mean of its divisors is an integer number (32554302).

Almost surely, 2130161443 is an apocalyptic number.

130161443 is a deficient number, since it is larger than the sum of its proper divisors (55765).

130161443 is an equidigital number, since it uses as much as digits as its factorization.

130161443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55764.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 130161443 is about 11408.8317982167. The cubic root of 130161443 is about 506.7893170774.

The spelling of 130161443 in words is "one hundred thirty million, one hundred sixty-one thousand, four hundred forty-three".

Divisors: 1 2441 53323 130161443