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13203002011 = 31181423431
BaseRepresentation
bin11000100101111010…
…11101001010011011
31021002010202222212111
430102331131022123
5204014432031021
610022042053151
7645116444143
oct142275351233
937063688774
1013203002011
115665828911
1226857aa1b7
13132546a534
148d36cd923
155241a08e1
hex312f5d29b

13203002011 has 4 divisors (see below), whose sum is σ = 13203456624. Its totient is φ = 13202547400.

The previous prime is 13203001991. The next prime is 13203002023. The reversal of 13203002011 is 11020030231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11020030231 = 71574290033.

It is a cyclic number.

It is not a de Polignac number, because 13203002011 - 211 = 13202999963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13203001982 and 13203002000.

It is not an unprimeable number, because it can be changed into a prime (13203092011) 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, 180535 + ... + 242896.

It is an arithmetic number, because the mean of its divisors is an integer number (3300864156).

Almost surely, 213203002011 is an apocalyptic number.

13203002011 is a deficient number, since it is larger than the sum of its proper divisors (454613).

13203002011 is an equidigital number, since it uses as much as digits as its factorization.

13203002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454612.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 13203002011 its reverse (11020030231), we get a palindrome (24223032242).

The spelling of 13203002011 in words is "thirteen billion, two hundred three million, two thousand, eleven".

Divisors: 1 31181 423431 13203002011