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13203130133 = 28723459671
BaseRepresentation
bin11000100101111011…
…11100011100010101
31021002011000111121202
430102331330130111
5204020000131013
610022044522245
7645120516524
oct142275743425
937064014552
1013203130133
1156659060a6
122685850385
1313254b394b
148d37244bb
155241c8858
hex312f7c715

13203130133 has 4 divisors (see below), whose sum is σ = 13203618528. Its totient is φ = 13202641740.

The previous prime is 13203130123. The next prime is 13203130141. The reversal of 13203130133 is 33103130231.

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: 33103130231 = 251131884981.

It is a cyclic number.

It is not a de Polignac number, because 13203130133 - 212 = 13203126037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13203130123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201113 + ... + 258558.

It is an arithmetic number, because the mean of its divisors is an integer number (3300904632).

Almost surely, 213203130133 is an apocalyptic number.

It is an amenable number.

13203130133 is a deficient number, since it is larger than the sum of its proper divisors (488395).

13203130133 is an equidigital number, since it uses as much as digits as its factorization.

13203130133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488394.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 13203130133 its reverse (33103130231), we get a palindrome (46306260364).

The spelling of 13203130133 in words is "thirteen billion, two hundred three million, one hundred thirty thousand, one hundred thirty-three".

Divisors: 1 28723 459671 13203130133