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312210130220 = 225137239947497
BaseRepresentation
bin1001000101100010010…
…11001000010100101100
31002211212110102220120022
410202301023020110230
520103401243131340
6355232150341312
731361600214542
oct4426113102454
91084773386508
10312210130220
1111045352a90a
125061265a838
1323597686631
141117aa1bd92
1581c45da3b5
hex48b12c852c

312210130220 has 48 divisors (see below), whose sum is σ = 660716179200. Its totient is φ = 123918203904.

The previous prime is 312210130217. The next prime is 312210130283. The reversal of 312210130220 is 22031012213.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6549512 + ... + 6597008.

It is an arithmetic number, because the mean of its divisors is an integer number (13764920400).

Almost surely, 2312210130220 is an apocalyptic number.

It is an amenable number.

312210130220 is an abundant number, since it is smaller than the sum of its proper divisors (348506048980).

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

312210130220 is a wasteful number, since it uses less digits than its factorization.

312210130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50042 (or 50040 counting only the distinct ones).

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

Adding to 312210130220 its reverse (22031012213), we get a palindrome (334241142433).

The spelling of 312210130220 in words is "three hundred twelve billion, two hundred ten million, one hundred thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 137 274 548 685 1370 2399 2740 4798 9596 11995 23990 47497 47980 94994 189988 237485 328663 474970 657326 949940 1314652 1643315 3286630 6507089 6573260 13014178 26028356 32535445 65070890 113945303 130141780 227890606 455781212 569726515 1139453030 2278906060 15610506511 31221013022 62442026044 78052532555 156105065110 312210130220