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213311214312 = 23373149173909
BaseRepresentation
bin1100011010101001010…
…1101101001011101000
3202101121000200102201220
43012222111231023220
511443330132324222
6241554355342040
721261023256000
oct3065225551350
9671530612656
10213311214312
118251268a569
12354115b1920
1317166017151
14a477cdd000
155836d9cb5c
hex31aa56d2e8

213311214312 has 128 divisors (see below), whose sum is σ = 626076000000. Its totient is φ = 60536679168.

The previous prime is 213311214307. The next prime is 213311214353. The reversal of 213311214312 is 213412113312.

213311214312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1139614 + ... + 1313522.

It is an arithmetic number, because the mean of its divisors is an integer number (4891218750).

Almost surely, 2213311214312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213311214312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313038000000).

213311214312 is an abundant number, since it is smaller than the sum of its proper divisors (412764785688).

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

213311214312 is a wasteful number, since it uses less digits than its factorization.

213311214312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174088 (or 174070 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

Adding to 213311214312 its reverse (213412113312), we get a palindrome (426723327624).

The spelling of 213311214312 in words is "two hundred thirteen billion, three hundred eleven million, two hundred fourteen thousand, three hundred twelve".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 49 56 84 98 147 149 168 196 294 298 343 392 447 588 596 686 894 1029 1043 1176 1192 1372 1788 2058 2086 2744 3129 3576 4116 4172 6258 7301 8232 8344 12516 14602 21903 25032 29204 43806 51107 58408 87612 102214 153321 173909 175224 204428 306642 347818 408856 521727 613284 695636 1043454 1217363 1226568 1391272 2086908 2434726 3652089 4173816 4869452 7304178 8521541 9738904 14608356 17043082 25564623 25912441 29216712 34086164 51129246 51824882 59650787 68172328 77737323 102258492 103649764 119301574 155474646 178952361 181387087 204516984 207299528 238603148 310949292 357904722 362774174 477206296 544161261 621898584 715809444 725548348 1088322522 1269709609 1431618888 1451096696 2176645044 2539419218 3809128827 4353290088 5078838436 7618257654 8887967263 10157676872 15236515308 17775934526 26663901789 30473030616 35551869052 53327803578 71103738104 106655607156 213311214312