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212003330231 = 71123215733151
BaseRepresentation
bin1100010101110001100…
…0100001100010110111
3202021012212200001001202
43011130120201202313
511433140323031411
6241220515043115
721213432400610
oct3053430414267
9667185601052
10212003330231
1181a01397930
12351075a049b
1316cb807b744
14a392328c07
1557ac15183b
hex315c6218b7

212003330231 has 48 divisors (see below), whose sum is σ = 278075793408. Its totient is φ = 157003704000.

The previous prime is 212003330213. The next prime is 212003330239. The reversal of 212003330231 is 132033300212.

It is not a de Polignac number, because 212003330231 - 26 = 212003330167 is a prime.

It is a super-2 number, since 2×2120033302312 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212003330239) 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, 6378506 + ... + 6411656.

It is an arithmetic number, because the mean of its divisors is an integer number (5793245696).

Almost surely, 2212003330231 is an apocalyptic number.

212003330231 is a deficient number, since it is larger than the sum of its proper divisors (66072463177).

212003330231 is a wasteful number, since it uses less digits than its factorization.

212003330231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33372 (or 33349 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 212003330231 its reverse (132033300212), we get a palindrome (344036630443).

The spelling of 212003330231 in words is "two hundred twelve billion, three million, three hundred thirty thousand, two hundred thirty-one".

Divisors: 1 7 11 23 77 157 161 253 529 1099 1727 1771 3611 3703 5819 12089 25277 33151 39721 40733 83053 232057 278047 364661 581371 762473 913583 2552627 5204707 5337311 6395081 8387203 17536879 36432949 57251777 58710421 119708261 122758153 192905669 400762439 837957827 1316790871 1350339683 2753290003 9217536097 19273030021 30286190033 212003330231