Search a number
-
+
31087745482068 = 223211232148401527
BaseRepresentation
bin1110001000110001011100…
…00001101011110101010100
311002001221220102201111220100
413010120232001223311110
513033320200320411233
6150041302455534100
76356005212420222
oct704305601536524
9132057812644810
1031087745482068
1199a6269961380
1235a101b08a330
13144673c41aa82
14796925101b12
1538d9e49d1813
hex1c462e06bd54

31087745482068 has 108 divisors (see below), whose sum is σ = 89616121122528. Its totient is φ = 9010940658720.

The previous prime is 31087745482043. The next prime is 31087745482069. The reversal of 31087745482068 is 86028454778013.

It is a happy number.

31087745482068 is a `hidden beast` number, since 3 + 1 + 0 + 8 + 7 + 7 + 4 + 548 + 20 + 68 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 31087745481996 and 31087745482014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31087745482069) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 73991280 + ... + 74410247.

Almost surely, 231087745482068 is an apocalyptic number.

It is an amenable number.

31087745482068 is an abundant number, since it is smaller than the sum of its proper divisors (58528375640460).

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

31087745482068 is a wasteful number, since it uses less digits than its factorization.

31087745482068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148401594 (or 148401566 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 63.

The spelling of 31087745482068 in words is "thirty-one trillion, eighty-seven billion, seven hundred forty-five million, four hundred eighty-two thousand, sixty-eight".

Divisors: 1 2 3 4 6 9 11 12 18 22 23 33 36 44 46 66 69 92 99 132 138 198 207 253 276 396 414 506 529 759 828 1012 1058 1518 1587 2116 2277 3036 3174 4554 4761 5819 6348 9108 9522 11638 17457 19044 23276 34914 52371 69828 104742 209484 148401527 296803054 445204581 593606108 890409162 1335613743 1632416797 1780818324 2671227486 3264833594 3413235121 4897250391 5342454972 6529667188 6826470242 9794500782 10239705363 13652940484 14691751173 19589001564 20479410726 29383502346 30719116089 37545586331 40958821452 58767004692 61438232178 75091172662 78504407783 112636758993 122876464356 150182345324 157008815566 225273517986 235513223349 314017631132 337910276979 450547035972 471026446698 675820553958 706539670047 863548485613 942052893396 1351641107916 1413079340094 1727096971226 2590645456839 2826158680188 3454193942452 5181290913678 7771936370517 10362581827356 15543872741034 31087745482068