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13115135 = 511389613
BaseRepresentation
bin110010000001…
…111011111111
3220200022120202
4302001323333
511324141020
61145034115
7216322355
oct62017377
926608522
1013115135
117448660
12448593b
132942747
141a557d5
151240e75
hexc81eff

13115135 has 16 divisors (see below), whose sum is σ = 17241120. Its totient is φ = 9498240.

The previous prime is 13115117. The next prime is 13115161. The reversal of 13115135 is 53151131.

It is not a de Polignac number, because 13115135 - 28 = 13114879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21089 + ... + 21701.

It is an arithmetic number, because the mean of its divisors is an integer number (1077570).

Almost surely, 213115135 is an apocalyptic number.

13115135 is a deficient number, since it is larger than the sum of its proper divisors (4125985).

13115135 is a wasteful number, since it uses less digits than its factorization.

13115135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018.

The product of its digits is 225, while the sum is 20.

The square root of 13115135 is about 3621.4824312704. The cubic root of 13115135 is about 235.8255857255.

Adding to 13115135 its reverse (53151131), we get a palindrome (66266266).

It can be divided in two parts, 1311 and 5135, that added together give a palindrome (6446).

The spelling of 13115135 in words is "thirteen million, one hundred fifteen thousand, one hundred thirty-five".

Divisors: 1 5 11 55 389 613 1945 3065 4279 6743 21395 33715 238457 1192285 2623027 13115135