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20130301212 = 2237534521631
BaseRepresentation
bin10010101111110111…
…000000010100011100
31220221220201020220120
4102233313000110130
5312211324114322
613125302114540
71311563510550
oct225767002434
956856636816
1020130301212
1185a003727a
123a9971ba50
131b8a69a548
14d8d723860
157cc408a5c
hex4afdc051c

20130301212 has 48 divisors (see below), whose sum is σ = 54693660672. Its totient is φ = 5642994240.

The previous prime is 20130301211. The next prime is 20130301231. The reversal of 20130301212 is 21210303102.

It is a junction number, because it is equal to n+sod(n) for n = 20130301191 and 20130301200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130301211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2256364 + ... + 2265267.

It is an arithmetic number, because the mean of its divisors is an integer number (1139451264).

Almost surely, 220130301212 is an apocalyptic number.

It is an amenable number.

20130301212 is an abundant number, since it is smaller than the sum of its proper divisors (34563359460).

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

20130301212 is a wasteful number, since it uses less digits than its factorization.

20130301212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4521698 (or 4521696 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20130301212 its reverse (21210303102), we get a palindrome (41340604314).

The spelling of 20130301212 in words is "twenty billion, one hundred thirty million, three hundred one thousand, two hundred twelve".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 53 84 106 159 212 318 371 636 742 1113 1484 2226 4452 4521631 9043262 13564893 18086524 27129786 31651417 54259572 63302834 94954251 126605668 189908502 239646443 379817004 479292886 718939329 958585772 1437878658 1677525101 2875757316 3355050202 5032575303 6710100404 10065150606 20130301212