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2213313131220 = 2235331389286493
BaseRepresentation
bin100000001101010011101…
…111100011001011010100
321211120221121010200012120
4200031103233203023110
5242230331130144340
64412440525415540
7315622651126512
oct40152357431324
97746847120176
102213313131220
1178372a61a574
122b8b5610a5b0
13130939a9cb89
14791a6b2b4b2
153c8901084d0
hex20353be32d4

2213313131220 has 96 divisors (see below), whose sum is σ = 6232000844160. Its totient is φ = 586918970880.

The previous prime is 2213313131209. The next prime is 2213313131233. The reversal of 2213313131220 is 221313133122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7582294 + ... + 7868786.

It is an arithmetic number, because the mean of its divisors is an integer number (64916675460).

Almost surely, 22213313131220 is an apocalyptic number.

2213313131220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2213313131220 is an abundant number, since it is smaller than the sum of its proper divisors (4018687712940).

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

2213313131220 is a wasteful number, since it uses less digits than its factorization.

2213313131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287225 (or 287223 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 2213313131220 its reverse (221313133122), we get a palindrome (2434626264342).

The spelling of 2213313131220 in words is "two trillion, two hundred thirteen billion, three hundred thirteen million, one hundred thirty-one thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 331 389 662 778 993 1167 1324 1556 1655 1945 1986 2334 3310 3890 3972 4668 4965 5835 6620 7780 9930 11670 19860 23340 128759 257518 286493 386277 515036 572986 643795 772554 859479 1145972 1287590 1432465 1545108 1718958 1931385 2575180 2864930 3437916 3862770 4297395 5729860 7725540 8594790 17189580 94829183 111445777 189658366 222891554 284487549 334337331 379316732 445783108 474145915 557228885 568975098 668674662 948291830 1114457770 1137950196 1337349324 1422437745 1671686655 1896583660 2228915540 2844875490 3343373310 5689750980 6686746620 36888552187 73777104374 110665656561 147554208748 184442760935 221331313122 368885521870 442662626244 553328282805 737771043740 1106656565610 2213313131220