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31608026228 = 22711098391217
BaseRepresentation
bin11101011011111111…
…000011010001110100
310000120211002002200002
4131123333003101310
51004213123314403
622304233410432
72166163534652
oct353377032164
9100524062602
1031608026228
111244a9a7a29
126161569a18
132c9957b1cc
14175bc2bdd2
15c4edb1188
hex75bfc3474

31608026228 has 48 divisors (see below), whose sum is σ = 56721772800. Its totient is φ = 15407400960.

The previous prime is 31608026201. The next prime is 31608026243. The reversal of 31608026228 is 82262080613.

It is a junction number, because it is equal to n+sod(n) for n = 31608026191 and 31608026200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25971476 + ... + 25972692.

It is an arithmetic number, because the mean of its divisors is an integer number (1181703600).

Almost surely, 231608026228 is an apocalyptic number.

It is an amenable number.

31608026228 is a deficient number, since it is larger than the sum of its proper divisors (25113746572).

31608026228 is a wasteful number, since it uses less digits than its factorization.

31608026228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240 (or 2238 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 31608026228 in words is "thirty-one billion, six hundred eight million, twenty-six thousand, two hundred twenty-eight".

Divisors: 1 2 4 71 109 142 218 284 436 839 1217 1678 2434 3356 4868 7739 15478 30956 59569 86407 91451 119138 132653 172814 182902 238276 265306 345628 365804 530612 1021063 2042126 4084252 6493021 9418363 12986042 18836726 25972084 37673452 72495473 111295867 144990946 222591734 289981892 445183468 7902006557 15804013114 31608026228