Search a number
-
+
13182131 = 102112911
BaseRepresentation
bin110010010010…
…010010110011
3220210201111002
4302102102303
511333312011
61150312215
7220021604
oct62222263
926721432
1013182131
117493a26
1244b866b
1329670a1
141a71dab
151255c3b
hexc924b3

13182131 has 4 divisors (see below), whose sum is σ = 13196064. Its totient is φ = 13168200.

The previous prime is 13182109. The next prime is 13182139. The reversal of 13182131 is 13128131.

13182131 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 13182131 - 218 = 12919987 is a prime.

It is a super-2 number, since 2×131821312 = 347537155402322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13182139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5435 + ... + 7476.

It is an arithmetic number, because the mean of its divisors is an integer number (3299016).

Almost surely, 213182131 is an apocalyptic number.

13182131 is a deficient number, since it is larger than the sum of its proper divisors (13933).

13182131 is a wasteful number, since it uses less digits than its factorization.

13182131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13932.

The product of its digits is 144, while the sum is 20.

The square root of 13182131 is about 3630.7204519214. The cubic root of 13182131 is about 236.2264595863.

The spelling of 13182131 in words is "thirteen million, one hundred eighty-two thousand, one hundred thirty-one".

Divisors: 1 1021 12911 13182131