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13123434241 = 53101247141
BaseRepresentation
bin11000011100011011…
…11011011100000001
31020212121001112102001
430032031323130001
5203334044343431
610010120424001
7643132231141
oct141615733401
936777045361
1013123434241
115624922425
122663018001
131311b2bb08
148c6cda921
1551c1d4e61
hex30e37b701

13123434241 has 4 divisors (see below), whose sum is σ = 13123734484. Its totient is φ = 13123134000.

The previous prime is 13123434227. The next prime is 13123434307. The reversal of 13123434241 is 14243432131.

It is a happy number.

13123434241 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 an emirpimes, since its reverse is a distinct semiprime: 14243432131 = 44332152217.

It can be written as a sum of positive squares in 2 ways, for example, as 12056040000 + 1067394241 = 109800^2 + 32671^2 .

It is a cyclic number.

It is not a de Polignac number, because 13123434241 - 27 = 13123434113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13123434041) 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, 70470 + ... + 176671.

It is an arithmetic number, because the mean of its divisors is an integer number (3280933621).

Almost surely, 213123434241 is an apocalyptic number.

It is an amenable number.

13123434241 is a deficient number, since it is larger than the sum of its proper divisors (300243).

13123434241 is an equidigital number, since it uses as much as digits as its factorization.

13123434241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300242.

The product of its digits is 6912, while the sum is 28.

Adding to 13123434241 its reverse (14243432131), we get a palindrome (27366866372).

The spelling of 13123434241 in words is "thirteen billion, one hundred twenty-three million, four hundred thirty-four thousand, two hundred forty-one".

Divisors: 1 53101 247141 13123434241