Search a number
-
+
231230012331230 = 2511231391123585503
BaseRepresentation
bin110100100100110101101110…
…101111110001010011011110
31010022201101002010112022200022
4310210311232233301103132
5220301433031124044410
62135441333505432142
766463550156225033
oct6444655657612336
91108641063468608
10231230012331230
116774a108897120
1221b25b1333b652
139c03b86aa78b3
14411584143338a
151baec537b6455
hexd24d6ebf14de

231230012331230 has 128 divisors (see below), whose sum is σ = 477627370536960. Its totient is φ = 79777973151360.

The previous prime is 231230012331211. The next prime is 231230012331287. The reversal of 231230012331230 is 32133210032132.

It is a self number, because there is not a number n which added to its sum of digits gives 231230012331230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 394632659 + ... + 395218161.

It is an arithmetic number, because the mean of its divisors is an integer number (3731463832320).

Almost surely, 2231230012331230 is an apocalyptic number.

231230012331230 is an abundant number, since it is smaller than the sum of its proper divisors (246397358205730).

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

231230012331230 is a wasteful number, since it uses less digits than its factorization.

231230012331230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586806.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 231230012331230 its reverse (32133210032132), we get a palindrome (263363222363362).

The spelling of 231230012331230 in words is "two hundred thirty-one trillion, two hundred thirty billion, twelve million, three hundred thirty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 11 22 23 46 55 110 115 139 230 253 278 506 695 1123 1265 1390 1529 2246 2530 3058 3197 5615 6394 7645 11230 12353 15290 15985 24706 25829 31970 35167 51658 61765 70334 123530 129145 156097 175835 258290 284119 312194 351670 568238 585503 780485 1171006 1420595 1560970 1717067 2841190 2927515 3434134 3590231 5855030 6440533 7180462 8585335 12881066 13466569 17170670 17951155 26933138 32202665 35902310 39492541 64405330 67332845 78985082 81384917 134665690 148132259 162769834 197462705 296264518 394925410 406924585 657519869 740661295 813849170 895234087 1315039738 1481322590 1790468174 1871853091 3287599345 3743706182 4476170435 6575198690 7232718559 8952340870 9359265455 14465437118 15122956987 18718530910 20590384001 30245913974 36163592795 41180768002 72327185590 75614784935 91395261791 102951920005 151229569870 166352526857 182790523582 205903840010 332705053714 456976308955 831762634285 913952617910 1005347879701 1663525268570 2010695759402 2102091021193 4204182042386 5026739398505 10053478797010 10510455105965 21020910211930 23123001233123 46246002466246 115615006165615 231230012331230