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231382806246 = 232193718285349
BaseRepresentation
bin1101011101111101111…
…1010110111011100110
3211010020110120102102200
43113133133112323212
512242332444244441
6254143520315330
722500611254644
oct3273737267346
9733213512380
10231382806246
118a146620009
1238a15772b46
1318a86022a07
14b2b0044194
1560436987b6
hex35df7d6ee6

231382806246 has 48 divisors (see below), whose sum is σ = 541977774000. Its totient is φ = 71093433024.

The previous prime is 231382806229. The next prime is 231382806289. The reversal of 231382806246 is 642608283132.

231382806246 is a `hidden beast` number, since 2 + 3 + 13 + 8 + 2 + 8 + 0 + 624 + 6 = 666.

It is a super-2 number, since 2×2313828062462 (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9130021 + ... + 9155328.

It is an arithmetic number, because the mean of its divisors is an integer number (11291203625).

Almost surely, 2231382806246 is an apocalyptic number.

231382806246 is an abundant number, since it is smaller than the sum of its proper divisors (310594967754).

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

231382806246 is a wasteful number, since it uses less digits than its factorization.

231382806246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18285413 (or 18285410 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 231382806246 in words is "two hundred thirty-one billion, three hundred eighty-two million, eight hundred six thousand, two hundred forty-six".

Divisors: 1 2 3 6 9 18 19 37 38 57 74 111 114 171 222 333 342 666 703 1406 2109 4218 6327 12654 18285349 36570698 54856047 109712094 164568141 329136282 347421631 676557913 694843262 1042264893 1353115826 2029673739 2084529786 3126794679 4059347478 6089021217 6253589358 12178042434 12854600347 25709200694 38563801041 77127602082 115691403123 231382806246