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21010312310230 = 258392934785331
BaseRepresentation
bin1001100011011110110000…
…01100111010110111010110
32202101120021210022120100201
410301233120030322313112
510223213104422411410
6112404000525131114
74265642060663215
oct461573014726726
982346253276321
1021010312310230
11677047261a271
122433b330b9a9a
13b95357b87a99
14528c940c307c
152667d6aeb83a
hex131bd833add6

21010312310230 has 32 divisors (see below), whose sum is σ = 37865371864320. Its totient is φ = 8393723691360.

The previous prime is 21010312310219. The next prime is 21010312310237. The reversal of 21010312310230 is 3201321301012.

It is a junction number, because it is equal to n+sod(n) for n = 21010312310198 and 21010312310207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010312310237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246178665 + ... + 246263995.

It is an arithmetic number, because the mean of its divisors is an integer number (1183292870760).

Almost surely, 221010312310230 is an apocalyptic number.

21010312310230 is a deficient number, since it is larger than the sum of its proper divisors (16855059554090).

21010312310230 is a wasteful number, since it uses less digits than its factorization.

21010312310230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115524.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21010312310230 its reverse (3201321301012), we get a palindrome (24211633611242).

The spelling of 21010312310230 in words is "twenty-one trillion, ten billion, three hundred twelve million, three hundred ten thousand, two hundred thirty".

Divisors: 1 2 5 10 839 1678 4195 8390 29347 58694 85331 146735 170662 293470 426655 853310 24622133 49244266 71592709 123110665 143185418 246221330 357963545 715927090 2504208857 5008417714 12521044285 25042088570 2101031231023 4202062462046 10505156155115 21010312310230