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13123822433 = 35449370217
BaseRepresentation
bin11000011100011110…
…11010001101100001
31020212121210020220112
430032033122031201
5203334144304213
610010133021105
7643135435661
oct141617321541
936777706815
1013123822433
115625068047
122663184795
131311c36707
148c6d9c1a1
1551c25eea8
hex30e3da361

13123822433 has 4 divisors (see below), whose sum is σ = 13124228100. Its totient is φ = 13123416768.

The previous prime is 13123822403. The next prime is 13123822451. The reversal of 13123822433 is 33422832131.

It is a happy number.

13123822433 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 2280349009 + 10843473424 = 47753^2 + 104132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13123822433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13123822433.

It is not an unprimeable number, because it can be changed into a prime (13123822403) 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, 149660 + ... + 220557.

It is an arithmetic number, because the mean of its divisors is an integer number (3281057025).

Almost surely, 213123822433 is an apocalyptic number.

It is an amenable number.

13123822433 is a deficient number, since it is larger than the sum of its proper divisors (405667).

13123822433 is an equidigital number, since it uses as much as digits as its factorization.

13123822433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405666.

The product of its digits is 20736, while the sum is 32.

The spelling of 13123822433 in words is "thirteen billion, one hundred twenty-three million, eight hundred twenty-two thousand, four hundred thirty-three".

Divisors: 1 35449 370217 13123822433