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13211031133 = 45472905439
BaseRepresentation
bin11000100110111000…
…00101011001011101
31021002200212220202101
430103130011121131
5204024010444013
610022530125101
7645244624516
oct142334053135
937080786671
1013211031133
11566a312253
122688420791
13132701bcb1
148d47bda0d
15524c398dd
hex31370565d

13211031133 has 4 divisors (see below), whose sum is σ = 13213941120. Its totient is φ = 13208121148.

The previous prime is 13211031103. The next prime is 13211031137. The reversal of 13211031133 is 33113011231.

13211031133 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33113011231 = 52363313597.

It is a cyclic number.

It is not a de Polignac number, because 13211031133 - 221 = 13208933981 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 13211031133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13211031137) 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, 1448173 + ... + 1457266.

It is an arithmetic number, because the mean of its divisors is an integer number (3303485280).

Almost surely, 213211031133 is an apocalyptic number.

It is an amenable number.

13211031133 is a deficient number, since it is larger than the sum of its proper divisors (2909987).

13211031133 is an equidigital number, since it uses as much as digits as its factorization.

13211031133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2909986.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 13211031133 its reverse (33113011231), we get a palindrome (46324042364).

The spelling of 13211031133 in words is "thirteen billion, two hundred eleven million, thirty-one thousand, one hundred thirty-three".

Divisors: 1 4547 2905439 13211031133