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13312311200 = 255244937061
BaseRepresentation
bin11000110010111100…
…11011111110100000
31021100202110110212222
430121132123332200
5204230422424300
610040545010212
7650614530626
oct143136337640
937322413788
1013312311200
1157114a8491
1226b6323968
131341cc0326
14904025516
1552da93785
hex31979bfa0

13312311200 has 72 divisors (see below), whose sum is σ = 32571938700. Its totient is φ = 5312921600.

The previous prime is 13312311179. The next prime is 13312311209. The reversal of 13312311200 is 211321331.

It can be written as a sum of positive squares in 6 ways, for example, as 8560690576 + 4751620624 = 92524^2 + 68932^2 .

It is not an unprimeable number, because it can be changed into a prime (13312311209) 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 11 ways as a sum of consecutive naturals, for example, 340670 + ... + 377730.

Almost surely, 213312311200 is an apocalyptic number.

13312311200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13312311200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16285969350).

13312311200 is an abundant number, since it is smaller than the sum of its proper divisors (19259627500).

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

13312311200 is a wasteful number, since it uses less digits than its factorization.

13312311200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37530 (or 37517 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13312311200 its reverse (211321331), we get a palindrome (13523632531).

The spelling of 13312311200 in words is "thirteen billion, three hundred twelve million, three hundred eleven thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 200 400 449 800 898 1796 2245 3592 4490 7184 8980 11225 14368 17960 22450 35920 37061 44900 71840 74122 89800 148244 179600 185305 296488 359200 370610 592976 741220 926525 1185952 1482440 1853050 2964880 3706100 5929760 7412200 14824400 16640389 29648800 33280778 66561556 83201945 133123112 166403890 266246224 332807780 416009725 532492448 665615560 832019450 1331231120 1664038900 2662462240 3328077800 6656155600 13312311200