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13220312210 = 257283325063
BaseRepresentation
bin11000100111111110…
…11111010010010010
31021010100100102222222
430103333133102102
5204033344442320
610023501101042
7645416541200
oct142377372222
937110312888
1013220312210
115674581266
12268b557782
131328c1b561
148d5b18070
1552596e825
hex313fdf492

13220312210 has 48 divisors (see below), whose sum is σ = 28015315776. Its totient is φ = 4478054112.

The previous prime is 13220312197. The next prime is 13220312213. The reversal of 13220312210 is 1221302231.

It is not an unprimeable number, because it can be changed into a prime (13220312213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121862 + ... + 203201.

It is an arithmetic number, because the mean of its divisors is an integer number (583652412).

Almost surely, 213220312210 is an apocalyptic number.

13220312210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13220312210 is an abundant number, since it is smaller than the sum of its proper divisors (14795003566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13220312210 is a wasteful number, since it uses less digits than its factorization.

13220312210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325167 (or 325160 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13220312210 its reverse (1221302231), we get a palindrome (14441614441).

The spelling of 13220312210 in words is "thirteen billion, two hundred twenty million, three hundred twelve thousand, two hundred ten".

Divisors: 1 2 5 7 10 14 35 49 70 83 98 166 245 415 490 581 830 1162 2905 4067 5810 8134 20335 40670 325063 650126 1625315 2275441 3250630 4550882 11377205 15928087 22754410 26980229 31856174 53960458 79640435 134901145 159280870 188861603 269802290 377723206 944308015 1322031221 1888616030 2644062442 6610156105 13220312210