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13123010213 = 94211392953
BaseRepresentation
bin11000011100011000…
…10011111010100101
31020212120020222202022
430032030103322211
5203333442311323
610010103352525
7643125513665
oct141614237245
936776228668
1013123010213
115624662895
122662a52745
131311a10b01
148c6c2a1a5
1551c14e4c8
hex30e313ea5

13123010213 has 4 divisors (see below), whose sum is σ = 13124412588. Its totient is φ = 13121607840.

The previous prime is 13123010189. The next prime is 13123010233. The reversal of 13123010213 is 31201032131.

13123010213 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 2874889924 + 10248120289 = 53618^2 + 101233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13123010213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13123010191 and 13123010200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123010233) 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, 687056 + ... + 705897.

It is an arithmetic number, because the mean of its divisors is an integer number (3281103147).

Almost surely, 213123010213 is an apocalyptic number.

It is an amenable number.

13123010213 is a deficient number, since it is larger than the sum of its proper divisors (1402375).

13123010213 is an equidigital number, since it uses as much as digits as its factorization.

13123010213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402374.

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

Adding to 13123010213 its reverse (31201032131), we get a palindrome (44324042344).

The spelling of 13123010213 in words is "thirteen billion, one hundred twenty-three million, ten thousand, two hundred thirteen".

Divisors: 1 9421 1392953 13123010213