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13213302005 = 55349861517
BaseRepresentation
bin11000100111001001…
…01111110011110101
31021002212011021210202
430103210233303311
5204030101131010
610023050530245
7645303133241
oct142344576365
937085137722
1013213302005
115670623402
122689136985
1313276357c7
148d4c11421
155250376a5
hex31392fcf5

13213302005 has 8 divisors (see below), whose sum is σ = 16155131832. Its totient is φ = 10371195328.

The previous prime is 13213301977. The next prime is 13213302007. The reversal of 13213302005 is 50020331231.

It can be written as a sum of positive squares in 4 ways, for example, as 2808894001 + 10404408004 = 52999^2 + 102002^2 .

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 13213302005 - 214 = 13213285621 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 (13213302007) 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, 24930494 + ... + 24931023.

It is an arithmetic number, because the mean of its divisors is an integer number (2019391479).

Almost surely, 213213302005 is an apocalyptic number.

It is an amenable number.

13213302005 is a deficient number, since it is larger than the sum of its proper divisors (2941829827).

13213302005 is an equidigital number, since it uses as much as digits as its factorization.

13213302005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49861575.

The product of its (nonzero) digits is 540, while the sum is 20.

Adding to 13213302005 its reverse (50020331231), we get a palindrome (63233633236).

The spelling of 13213302005 in words is "thirteen billion, two hundred thirteen million, three hundred two thousand, five".

Divisors: 1 5 53 265 49861517 249307585 2642660401 13213302005