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13137413 = 17772789
BaseRepresentation
bin110010000111…
…011000000101
3220201110010212
4302013120011
511330344123
61145325205
7216444332
oct62073005
926643125
1013137413
117463373
124496805
13294c923
141a5d989
151247878
hexc87605

13137413 has 4 divisors (see below), whose sum is σ = 13910220. Its totient is φ = 12364608.

The previous prime is 13137409. The next prime is 13137419. The reversal of 13137413 is 31473131.

13137413 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31473131 = 231368397.

It can be written as a sum of positive squares in 2 ways, for example, as 3694084 + 9443329 = 1922^2 + 3073^2 .

It is a cyclic number.

It is not a de Polignac number, because 13137413 - 22 = 13137409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13137419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386378 + ... + 386411.

It is an arithmetic number, because the mean of its divisors is an integer number (3477555).

Almost surely, 213137413 is an apocalyptic number.

It is an amenable number.

13137413 is a deficient number, since it is larger than the sum of its proper divisors (772807).

13137413 is an equidigital number, since it uses as much as digits as its factorization.

13137413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772806.

The product of its digits is 756, while the sum is 23.

The square root of 13137413 is about 3624.5569384409. The cubic root of 13137413 is about 235.9590384238.

The spelling of 13137413 in words is "thirteen million, one hundred thirty-seven thousand, four hundred thirteen".

Divisors: 1 17 772789 13137413