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212011110331 = 4133611538531
BaseRepresentation
bin1100010101110011011…
…0001100111110111011
3202021020102022022100121
43011130312030332323
511433144321012311
6241221353514111
721213555463246
oct3053466147673
9667212268317
10212011110331
1181a05821169
123510a112937
1316cb9873a57
14a39339225d
1557acb8bb71
hex315cd8cfbb

212011110331 has 8 divisors (see below), whose sum is σ = 217246872528. Its totient is φ = 206778432000.

The previous prime is 212011110317. The next prime is 212011110359. The reversal of 212011110331 is 133011110212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212011110331 - 25 = 212011110299 is a prime.

It is a super-2 number, since 2×2120111103312 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212011110631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631465 + ... + 907066.

It is an arithmetic number, because the mean of its divisors is an integer number (27155859066).

Almost surely, 2212011110331 is an apocalyptic number.

212011110331 is a deficient number, since it is larger than the sum of its proper divisors (5235762197).

212011110331 is a wasteful number, since it uses less digits than its factorization.

212011110331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541933.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 212011110331 its reverse (133011110212), we get a palindrome (345022220543).

The spelling of 212011110331 in words is "two hundred twelve billion, eleven million, one hundred ten thousand, three hundred thirty-one".

Divisors: 1 41 3361 137801 1538531 63079771 5171002691 212011110331