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13203320131 = 23619410777
BaseRepresentation
bin11000100101111101…
…01010110101000011
31021002011101011020201
430102332222311003
5204020022221011
610022052550031
7645122240461
oct142276526503
937064334221
1013203320131
115665a25921
122685922317
13132554c281
148d3773831
15524214cc1
hex312faad43

13203320131 has 8 divisors (see below), whose sum is σ = 14003237664. Its totient is φ = 12422224320.

The previous prime is 13203320111. The next prime is 13203320183. The reversal of 13203320131 is 13102330231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13203320131 is a prime.

It is a super-2 number, since 2×132033201312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13203320099 and 13203320108.

It is not an unprimeable number, because it can be changed into a prime (13203320111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4703986 + ... + 4706791.

It is an arithmetic number, because the mean of its divisors is an integer number (1750404708).

Almost surely, 213203320131 is an apocalyptic number.

13203320131 is a deficient number, since it is larger than the sum of its proper divisors (799917533).

13203320131 is an equidigital number, since it uses as much as digits as its factorization.

13203320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9410861.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 13203320131 its reverse (13102330231), we get a palindrome (26305650362).

The spelling of 13203320131 in words is "thirteen billion, two hundred three million, three hundred twenty thousand, one hundred thirty-one".

Divisors: 1 23 61 1403 9410777 216447871 574057397 13203320131