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13230133 = 71890019
BaseRepresentation
bin110010011110…
…000000110101
3220220011022221
4302132000311
511341331013
61151322341
7220311550
oct62360065
926804287
1013230133
117516aa4
1245203b1
132982ba7
141a85697
15126508d
hexc9e035

13230133 has 4 divisors (see below), whose sum is σ = 15120160. Its totient is φ = 11340108.

The previous prime is 13230109. The next prime is 13230169. The reversal of 13230133 is 33103231.

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: 33103231 = 74729033.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13230133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13260133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945003 + ... + 945016.

It is an arithmetic number, because the mean of its divisors is an integer number (3780040).

Almost surely, 213230133 is an apocalyptic number.

It is an amenable number.

13230133 is a deficient number, since it is larger than the sum of its proper divisors (1890027).

13230133 is an equidigital number, since it uses as much as digits as its factorization.

13230133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890026.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 13230133 is about 3637.3249786072. The cubic root of 13230133 is about 236.5128474353.

Adding to 13230133 its reverse (33103231), we get a palindrome (46333364).

The spelling of 13230133 in words is "thirteen million, two hundred thirty thousand, one hundred thirty-three".

Divisors: 1 7 1890019 13230133