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130771 = 251521
BaseRepresentation
bin11111111011010011
320122101101
4133323103
513141041
62445231
71053154
oct377323
9218341
10130771
118a283
1263817
13476a4
143592b
1528b31
hex1fed3

130771 has 4 divisors (see below), whose sum is σ = 131544. Its totient is φ = 130000.

The previous prime is 130769. The next prime is 130783. The reversal of 130771 is 177031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 130771 - 21 = 130769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130171) 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, 10 + ... + 511.

It is an arithmetic number, because the mean of its divisors is an integer number (32886).

2130771 is an apocalyptic number.

130771 is a deficient number, since it is larger than the sum of its proper divisors (773).

130771 is an equidigital number, since it uses as much as digits as its factorization.

130771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772.

The product of its (nonzero) digits is 147, while the sum is 19.

The square root of 130771 is about 361.6227315864. The cubic root of 130771 is about 50.7579197683.

It can be divided in two parts, 1307 and 71, that added together give a triangular number (1378 = T52).

The spelling of 130771 in words is "one hundred thirty thousand, seven hundred seventy-one".

Divisors: 1 251 521 130771