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131273 = 251523
BaseRepresentation
bin100000000011001001
320200001222
4200003021
513200043
62451425
71054502
oct400311
9220058
10131273
118a69a
1263b75
134799c
1435ba9
1528d68
hex200c9

131273 has 4 divisors (see below), whose sum is σ = 132048. Its totient is φ = 130500.

The previous prime is 131267. The next prime is 131293. The reversal of 131273 is 372131.

It can be divided in two parts, 131 and 273, that added together give a palindrome (404).

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 131273 - 214 = 114889 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (131203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11 + ... + 512.

It is an arithmetic number, because the mean of its divisors is an integer number (33012).

2131273 is an apocalyptic number.

It is an amenable number.

131273 is a deficient number, since it is larger than the sum of its proper divisors (775).

131273 is an equidigital number, since it uses as much as digits as its factorization.

131273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774.

The product of its digits is 126, while the sum is 17.

The square root of 131273 is about 362.3161602799. The cubic root of 131273 is about 50.8227861901.

The spelling of 131273 in words is "one hundred thirty-one thousand, two hundred seventy-three".

Divisors: 1 251 523 131273