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213230420312 = 23713436811603
BaseRepresentation
bin1100011010010110000…
…1100000000101011000
3202101101101122200012112
43012211201200011120
511443143441422222
6241542351531452
721256022444660
oct3064541400530
9671341580175
10213230420312
1182481016868
12353aa529b88
1317152369550
14a46b2ab1a0
15582ec3dbe2
hex31a5860158

213230420312 has 64 divisors (see below), whose sum is σ = 503513767680. Its totient is φ = 82393137792.

The previous prime is 213230420257. The next prime is 213230420323. The reversal of 213230420312 is 213024032312.

It is a congruent number.

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, 3374498 + ... + 3437105.

It is an arithmetic number, because the mean of its divisors is an integer number (7867402620).

Almost surely, 2213230420312 is an apocalyptic number.

It is an amenable number.

213230420312 is an abundant number, since it is smaller than the sum of its proper divisors (290283347368).

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

213230420312 is a wasteful number, since it uses less digits than its factorization.

213230420312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6811672 (or 6811668 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 213230420312 its reverse (213024032312), we get a palindrome (426254452624).

The spelling of 213230420312 in words is "two hundred thirteen billion, two hundred thirty million, four hundred twenty thousand, three hundred twelve".

Divisors: 1 2 4 7 8 13 14 26 28 43 52 56 86 91 104 172 182 301 344 364 559 602 728 1118 1204 2236 2408 3913 4472 7826 15652 31304 6811603 13623206 27246412 47681221 54492824 88550839 95362442 177101678 190724884 292898929 354203356 381449768 585797858 619855873 708406712 1171595716 1239711746 2050292503 2343191432 2479423492 3807686077 4100585006 4958846984 7615372154 8201170012 15230744308 16402340024 26653802539 30461488616 53307605078 106615210156 213230420312