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13103120213 = 21376131549
BaseRepresentation
bin11000011010000000…
…11011111101010101
31020211011211110210122
430031000123331111
5203313344321323
610004113201325
7642464453441
oct141500337525
936734743718
1013103120213
115614408177
122658260245
13130a868791
148c432d821
1551a520ec8
hex30d01bf55

13103120213 has 4 divisors (see below), whose sum is σ = 13109253900. Its totient is φ = 13096986528.

The previous prime is 13103120183. The next prime is 13103120227. The reversal of 13103120213 is 31202130131.

13103120213 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.

It can be written as a sum of positive squares in 2 ways, for example, as 963047089 + 12140073124 = 31033^2 + 110182^2 .

It is a cyclic number.

It is not a de Polignac number, because 13103120213 - 216 = 13103054677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13103120191 and 13103120200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13103120273) 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, 3063638 + ... + 3067911.

It is an arithmetic number, because the mean of its divisors is an integer number (3277313475).

Almost surely, 213103120213 is an apocalyptic number.

It is an amenable number.

13103120213 is a deficient number, since it is larger than the sum of its proper divisors (6133687).

13103120213 is an equidigital number, since it uses as much as digits as its factorization.

13103120213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6133686.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13103120213 its reverse (31202130131), we get a palindrome (44305250344).

The spelling of 13103120213 in words is "thirteen billion, one hundred three million, one hundred twenty thousand, two hundred thirteen".

Divisors: 1 2137 6131549 13103120213