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13000310321 = 19684226859
BaseRepresentation
bin11000001101110000…
…01111111000110001
31020120000101012010212
430012320033320301
5203111034412241
65550001433505
7640105546235
oct140670177061
936500335125
1013000310321
115571377619
12262993b895
1312c248001b
148b480a5c5
155114b3beb
hex306e0fe31

13000310321 has 4 divisors (see below), whose sum is σ = 13684537200. Its totient is φ = 12316083444.

The previous prime is 13000310317. The next prime is 13000310333. The reversal of 13000310321 is 12301300031.

13000310321 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: 12301300031 = 67183601493.

It is a cyclic number.

It is not a de Polignac number, because 13000310321 - 22 = 13000310317 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13000310296 and 13000310305.

It is not an unprimeable number, because it can be changed into a prime (13000310311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342113411 + ... + 342113448.

It is an arithmetic number, because the mean of its divisors is an integer number (3421134300).

Almost surely, 213000310321 is an apocalyptic number.

It is an amenable number.

13000310321 is a deficient number, since it is larger than the sum of its proper divisors (684226879).

13000310321 is an equidigital number, since it uses as much as digits as its factorization.

13000310321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684226878.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 13000310321 its reverse (12301300031), we get a palindrome (25301610352).

The spelling of 13000310321 in words is "thirteen billion, three hundred ten thousand, three hundred twenty-one".

Divisors: 1 19 684226859 13000310321