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13143107 = 19368099
BaseRepresentation
bin110010001000…
…110001000011
3220201201221202
4302020301003
511331034412
61145411415
7216500045
oct62106103
926651852
1013143107
11746767a
124499b6b
1329523b3
141a61a95
1512493c2
hexc88c43

13143107 has 4 divisors (see below), whose sum is σ = 13211400. Its totient is φ = 13074816.

The previous prime is 13143089. The next prime is 13143149. The reversal of 13143107 is 70134131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13143107 - 26 = 13143043 is a prime.

It is a super-2 number, since 2×131431072 = 345482523226898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13143167) 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, 33857 + ... + 34242.

It is an arithmetic number, because the mean of its divisors is an integer number (3302850).

Almost surely, 213143107 is an apocalyptic number.

13143107 is a deficient number, since it is larger than the sum of its proper divisors (68293).

13143107 is an equidigital number, since it uses as much as digits as its factorization.

13143107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68292.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 13143107 is about 3625.3423286636. The cubic root of 13143107 is about 235.9931231837.

Adding to 13143107 its reverse (70134131), we get a palindrome (83277238).

The spelling of 13143107 in words is "thirteen million, one hundred forty-three thousand, one hundred seven".

Divisors: 1 193 68099 13143107