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130281 = 343427
BaseRepresentation
bin11111110011101001
320121201020
4133303221
513132111
62443053
71051554
oct376351
9217636
10130281
1189978
1263489
13473b8
143569b
1528906
hex1fce9

130281 has 4 divisors (see below), whose sum is σ = 173712. Its totient is φ = 86852.

The previous prime is 130279. The next prime is 130303. The reversal of 130281 is 182031.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 130281 - 21 = 130279 is a prime.

It is a super-2 number, since 2×1302812 = 33946277922, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 130281.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 130281.

It is not an unprimeable number, because it can be changed into a prime (130201) 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, 21711 + ... + 21716.

It is an arithmetic number, because the mean of its divisors is an integer number (43428).

2130281 is an apocalyptic number.

It is an amenable number.

130281 is a deficient number, since it is larger than the sum of its proper divisors (43431).

130281 is an equidigital number, since it uses as much as digits as its factorization.

130281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43430.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 130281 is about 360.9445940861. The cubic root of 130281 is about 50.6944436410.

The spelling of 130281 in words is "one hundred thirty thousand, two hundred eighty-one".

Divisors: 1 3 43427 130281