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13312221223 = 76737617547
BaseRepresentation
bin11000110010111100…
…00110000000100111
31021100202021220110111
430121132012000213
5204230412034343
610040543033451
7650614004410
oct143136060047
937322256414
1013312221223
115711446924
1226b629b887
131341c8b3a2
14904000807
1552da76c9d
hex319786027

13312221223 has 16 divisors (see below), whose sum is σ = 15447193344. Its totient is φ = 11235692160.

The previous prime is 13312221217. The next prime is 13312221239. The reversal of 13312221223 is 32212221331.

It is not a de Polignac number, because 13312221223 - 229 = 12775350311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13312221194 and 13312221203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312221253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1760136 + ... + 1767682.

It is an arithmetic number, because the mean of its divisors is an integer number (965449584).

Almost surely, 213312221223 is an apocalyptic number.

13312221223 is a deficient number, since it is larger than the sum of its proper divisors (2134972121).

13312221223 is an equidigital number, since it uses as much as digits as its factorization.

13312221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11382.

The product of its digits is 864, while the sum is 22.

Adding to 13312221223 its reverse (32212221331), we get a palindrome (45524442554).

The spelling of 13312221223 in words is "thirteen billion, three hundred twelve million, two hundred twenty-one thousand, two hundred twenty-three".

Divisors: 1 7 67 469 3761 7547 26327 52829 251987 505649 1763909 3539543 28384267 198689869 1901745889 13312221223