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13135069 = 61215329
BaseRepresentation
bin110010000110…
…110011011101
3220201022221001
4302012303131
511330310234
61145310301
7216434443
oct62066335
926638831
1013135069
117461632
124495391
13294b83c
141a5cb93
151246d14
hexc86cdd

13135069 has 4 divisors (see below), whose sum is σ = 13350460. Its totient is φ = 12919680.

The previous prime is 13135049. The next prime is 13135079. The reversal of 13135069 is 96053131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96053131 = 711352861.

It can be written as a sum of positive squares in 2 ways, for example, as 4782969 + 8352100 = 2187^2 + 2890^2 .

It is a cyclic number.

It is not a de Polignac number, because 13135069 - 219 = 12610781 is a prime.

It is a super-2 number, since 2×131350692 = 345060075269522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13135019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107604 + ... + 107725.

It is an arithmetic number, because the mean of its divisors is an integer number (3337615).

Almost surely, 213135069 is an apocalyptic number.

It is an amenable number.

13135069 is a deficient number, since it is larger than the sum of its proper divisors (215391).

13135069 is an equidigital number, since it uses as much as digits as its factorization.

13135069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215390.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 13135069 is about 3624.2335741505. The cubic root of 13135069 is about 235.9450041822.

The spelling of 13135069 in words is "thirteen million, one hundred thirty-five thousand, sixty-nine".

Divisors: 1 61 215329 13135069