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13211007 = 34403669
BaseRepresentation
bin110010011001…
…010101111111
3220212012002120
4302121111333
511340223012
61151054023
7220202025
oct62312577
926765076
1013211007
117503697
124511313
132977284
141a7c715
15125e58c
hexc9957f

13211007 has 4 divisors (see below), whose sum is σ = 17614680. Its totient is φ = 8807336.

The previous prime is 13210937. The next prime is 13211059. The reversal of 13211007 is 70011231.

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 13211007 - 210 = 13209983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13211207) 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, 2201832 + ... + 2201837.

It is an arithmetic number, because the mean of its divisors is an integer number (4403670).

Almost surely, 213211007 is an apocalyptic number.

13211007 is a deficient number, since it is larger than the sum of its proper divisors (4403673).

13211007 is an equidigital number, since it uses as much as digits as its factorization.

13211007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4403672.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 13211007 is about 3634.6948977872. The cubic root of 13211007 is about 236.3988217165.

Adding to 13211007 its reverse (70011231), we get a palindrome (83222238).

The spelling of 13211007 in words is "thirteen million, two hundred eleven thousand, seven".

Divisors: 1 3 4403669 13211007