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212230212131 = 724345799667
BaseRepresentation
bin1100010110100111101…
…0000000101000100011
3202021210200120211112002
43011221322000220203
511434121413242011
6241255221554215
721222156016100
oct3055172005043
9667720524462
10212230212131
1182008470633
123516b57596b
13170230886a2
14a3b4507aa7
1557c201ac3b
hex3169e80a23

212230212131 has 12 divisors (see below), whose sum is σ = 246888200808. Its totient is φ = 181905599232.

The previous prime is 212230212109. The next prime is 212230212137. The reversal of 212230212131 is 131212032212.

It is not a de Polignac number, because 212230212131 - 226 = 212163103267 is a prime.

It is a super-2 number, since 2×2122302121312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212230212137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2079560 + ... + 2179226.

It is an arithmetic number, because the mean of its divisors is an integer number (20574016734).

Almost surely, 2212230212131 is an apocalyptic number.

212230212131 is a deficient number, since it is larger than the sum of its proper divisors (34657988677).

212230212131 is an equidigital number, since it uses as much as digits as its factorization.

212230212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143138 (or 143131 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 212230212131 its reverse (131212032212), we get a palindrome (343442244343).

The spelling of 212230212131 in words is "two hundred twelve billion, two hundred thirty million, two hundred twelve thousand, one hundred thirty-one".

Divisors: 1 7 49 43457 99667 304199 697669 2129393 4883683 4331228819 30318601733 212230212131