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212010231213 = 32113769183761
BaseRepresentation
bin1100010101110011001…
…0110110010110101101
3202021020100122122102200
43011130302312112231
511433144104344323
6241221323012113
721213545142234
oct3053462662655
9667210578380
10212010231213
1181a05280720
123510996a039
1316cb9626871
14a393203b1b
1557aca66443
hex315ccb65ad

212010231213 has 48 divisors (see below), whose sum is σ = 343606466112. Its totient is φ = 124835904000.

The previous prime is 212010231211. The next prime is 212010231217. The reversal of 212010231213 is 312132010212.

212010231213 is a `hidden beast` number, since 21 + 201 + 0 + 231 + 213 = 666.

It is not a de Polignac number, because 212010231213 - 21 = 212010231211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212010231211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2489253 + ... + 2573013.

It is an arithmetic number, because the mean of its divisors is an integer number (7158468044).

Almost surely, 2212010231213 is an apocalyptic number.

It is an amenable number.

212010231213 is a deficient number, since it is larger than the sum of its proper divisors (131596234899).

212010231213 is a wasteful number, since it uses less digits than its factorization.

212010231213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84506 (or 84503 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212010231213 its reverse (312132010212), we get a palindrome (524142241425).

The spelling of 212010231213 in words is "two hundred twelve billion, ten million, two hundred thirty-one thousand, two hundred thirteen".

Divisors: 1 3 9 11 33 37 99 111 333 407 691 1221 2073 3663 6219 7601 22803 25567 68409 76701 83761 230103 251283 281237 753849 843711 921371 2531133 2764113 3099157 8292339 9297471 27892413 34090727 57878851 102272181 173636553 306816543 520909659 636667361 1910002083 2141517487 5730006249 6424552461 19273657383 23556692357 70670077071 212010231213