Search a number
-
+
31052212347 = 313232953101223
BaseRepresentation
bin11100111010110110…
…110010100001111011
32222011002012211100210
4130322312302201323
51002043331243342
622133140402203
72146334310222
oct347266624173
988132184323
1031052212347
1112195189812
1260273a6363
132c0b383660
1417080a7cb9
15c1b1c079c
hex73adb287b

31052212347 has 128 divisors (see below), whose sum is σ = 49746493440. Its totient is φ = 17066649600.

The previous prime is 31052212337. The next prime is 31052212351. The reversal of 31052212347 is 74321225013.

It is not a de Polignac number, because 31052212347 - 226 = 30985103483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31052212337) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 139247478 + ... + 139247700.

It is an arithmetic number, because the mean of its divisors is an integer number (388644480).

Almost surely, 231052212347 is an apocalyptic number.

31052212347 is a deficient number, since it is larger than the sum of its proper divisors (18694281093).

31052212347 is a wasteful number, since it uses less digits than its factorization.

31052212347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445.

The product of its (nonzero) digits is 10080, while the sum is 30.

The spelling of 31052212347 in words is "thirty-one billion, fifty-two million, two hundred twelve thousand, three hundred forty-seven".

Divisors: 1 3 13 23 29 39 53 69 87 101 159 223 299 303 377 667 669 689 897 1131 1219 1313 1537 2001 2067 2323 2899 2929 3657 3939 4611 5129 5353 6467 6969 8671 8697 8787 11819 15387 15847 16059 19401 19981 22523 26013 30199 35351 35457 38077 47541 59943 66677 67367 67569 69589 84071 90597 106053 114231 123119 148741 153647 155237 200031 202101 208767 252213 271837 292799 342751 369357 446223 459563 460941 465711 518029 653167 815511 875771 878397 1028253 1193719 1378689 1554087 1600547 1933633 1959501 2018081 2627313 3533881 3570451 3581157 4455763 4801641 5800899 6054243 6734377 7883273 8491171 10601643 10711353 13367289 15022841 15518347 20203131 23649819 25473513 27455537 34617851 45068523 46415863 46555041 82366611 102482549 103853553 139247589 195296933 307447647 356921981 450032063 585890799 796210573 1070765943 1350096189 2388631719 10350737449 31052212347