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213312213352 = 23717224067451
BaseRepresentation
bin1100011010101001100…
…1100001000101101000
3202101121002120012011101
43012222121201011220
511443330411311402
6241554433011144
721261034616440
oct3065231410550
9671532505141
10213312213352
1182513202117
12354119b3ab4
13171662a6ab4
14a4780bd120
155836ee8b87
hex31aa661168

213312213352 has 32 divisors (see below), whose sum is σ = 483985696320. Its totient is φ = 86041900800.

The previous prime is 213312213299. The next prime is 213312213353. The reversal of 213312213352 is 253312213312.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 213312213352.

It is not an unprimeable number, because it can be changed into a prime (213312213353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112032774 + ... + 112034677.

It is an arithmetic number, because the mean of its divisors is an integer number (15124553010).

Almost surely, 2213312213352 is an apocalyptic number.

It is an amenable number.

213312213352 is an abundant number, since it is smaller than the sum of its proper divisors (270673482968).

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

213312213352 is a wasteful number, since it uses less digits than its factorization.

213312213352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224067481 (or 224067477 counting only the distinct ones).

The product of its digits is 6480, while the sum is 28.

Adding to 213312213352 its reverse (253312213312), we get a palindrome (466624426664).

The spelling of 213312213352 in words is "two hundred thirteen billion, three hundred twelve million, two hundred thirteen thousand, three hundred fifty-two".

Divisors: 1 2 4 7 8 14 17 28 34 56 68 119 136 238 476 952 224067451 448134902 896269804 1568472157 1792539608 3136944314 3809146667 6273888628 7618293334 12547777256 15236586668 26664026669 30473173336 53328053338 106656106676 213312213352