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13081711 = 97157859
BaseRepresentation
bin110001111001…
…110001101111
3220121121201211
4301321301233
511322103321
61144215251
7216123046
oct61716157
926547654
1013081711
117425535
12446a527
132930476
141a4755d
1512360e1
hexc79c6f

13081711 has 8 divisors (see below), whose sum is σ = 13316240. Its totient is φ = 12849408.

The previous prime is 13081699. The next prime is 13081727. The reversal of 13081711 is 11718031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13081711 - 215 = 13048943 is a prime.

It is a super-2 number, since 2×130817112 = 342262325375042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13081751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14800 + ... + 15658.

It is an arithmetic number, because the mean of its divisors is an integer number (1664530).

Almost surely, 213081711 is an apocalyptic number.

13081711 is a deficient number, since it is larger than the sum of its proper divisors (234529).

13081711 is an equidigital number, since it uses as much as digits as its factorization.

13081711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113.

The product of its (nonzero) digits is 168, while the sum is 22.

The square root of 13081711 is about 3616.8648025604. The cubic root of 13081711 is about 235.6250809945.

Adding to 13081711 its reverse (11718031), we get a palindrome (24799742).

The spelling of 13081711 in words is "thirteen million, eighty-one thousand, seven hundred eleven".

Divisors: 1 97 157 859 15229 83323 134863 13081711