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13606131 = 371158901
BaseRepresentation
bin110011111001…
…110011110011
3221121021002210
4303321303303
511440344011
61203343203
7223436010
oct63716363
927537083
1013606131
117753540
124681b03
132a85086
141b42707
1512db6a6
hexcf9cf3

13606131 has 16 divisors (see below), whose sum is σ = 22618368. Its totient is φ = 7068000.

The previous prime is 13606123. The next prime is 13606139. The reversal of 13606131 is 13160631.

It is an interprime number because it is at equal distance from previous prime (13606123) and next prime (13606139).

It is not a de Polignac number, because 13606131 - 23 = 13606123 is a prime.

It is a super-2 number, since 2×136061312 = 370253601578322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 13606098 and 13606107.

It is not an unprimeable number, because it can be changed into a prime (13606139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29220 + ... + 29681.

It is an arithmetic number, because the mean of its divisors is an integer number (1413648).

Almost surely, 213606131 is an apocalyptic number.

13606131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13606131 is a deficient number, since it is larger than the sum of its proper divisors (9012237).

13606131 is a wasteful number, since it uses less digits than its factorization.

13606131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58922.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 13606131 is about 3688.6489396526. The cubic root of 13606131 is about 238.7325018471.

Adding to 13606131 its reverse (13160631), we get a palindrome (26766762).

The spelling of 13606131 in words is "thirteen million, six hundred six thousand, one hundred thirty-one".

Divisors: 1 3 7 11 21 33 77 231 58901 176703 412307 647911 1236921 1943733 4535377 13606131