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13143413 = 94713879
BaseRepresentation
bin110010001000…
…110101110101
3220201202101002
4302020311311
511331042123
61145413045
7216500663
oct62106565
926652332
1013143413
117467928
12449a185
13295258a
141a61c33
151249528
hexc88d75

13143413 has 4 divisors (see below), whose sum is σ = 13158240. Its totient is φ = 13128588.

The previous prime is 13143407. The next prime is 13143443. The reversal of 13143413 is 31434131.

13143413 is digitally balanced in base 2, 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31434131 = 139922469.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13143413 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 (13143443) 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, 5993 + ... + 7886.

It is an arithmetic number, because the mean of its divisors is an integer number (3289560).

Almost surely, 213143413 is an apocalyptic number.

It is an amenable number.

13143413 is a deficient number, since it is larger than the sum of its proper divisors (14827).

13143413 is an equidigital number, since it uses as much as digits as its factorization.

13143413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14826.

The product of its digits is 432, while the sum is 20.

The square root of 13143413 is about 3625.3845313291. The cubic root of 13143413 is about 235.9949546465.

Adding to 13143413 its reverse (31434131), we get a palindrome (44577544).

The spelling of 13143413 in words is "thirteen million, one hundred forty-three thousand, four hundred thirteen".

Divisors: 1 947 13879 13143413