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13124113 = 106912277
BaseRepresentation
bin110010000100…
…001000010001
3220200202220021
4302010020101
511324432423
61145143441
7216360502
oct62041021
926622807
1013124113
117454382
12448ab81
132946862
141a58ba9
15124395d
hexc84211

13124113 has 4 divisors (see below), whose sum is σ = 13137460. Its totient is φ = 13110768.

The previous prime is 13124107. The next prime is 13124131. The reversal of 13124113 is 31142131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31142131 = 37398329.

It can be written as a sum of positive squares in 2 ways, for example, as 3283344 + 9840769 = 1812^2 + 3137^2 .

It is a cyclic number.

It is not a de Polignac number, because 13124113 - 25 = 13124081 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (13124143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5070 + ... + 7207.

It is an arithmetic number, because the mean of its divisors is an integer number (3284365).

Almost surely, 213124113 is an apocalyptic number.

It is an amenable number.

13124113 is a deficient number, since it is larger than the sum of its proper divisors (13347).

13124113 is a wasteful number, since it uses less digits than its factorization.

13124113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13346.

The product of its digits is 72, while the sum is 16.

The square root of 13124113 is about 3622.7217668488. The cubic root of 13124113 is about 235.8793851252.

Adding to 13124113 its reverse (31142131), we get a palindrome (44266244).

The spelling of 13124113 in words is "thirteen million, one hundred twenty-four thousand, one hundred thirteen".

Divisors: 1 1069 12277 13124113