Search a number
-
+
31030104413021 = 71929157119342953
BaseRepresentation
bin1110000111000110000100…
…10110011101001101011101
311001212110010022212211002012
413003203002112131031131
513031344123212204041
6145555011055441005
76351564625416230
oct703430226351535
9131773108784065
1031030104413021
11998387aa9602a
123591a13226165
1314411845ca21c
14793c17a5b417
1538c26e3e13eb
hex1c38c259d35d

31030104413021 has 64 divisors (see below), whose sum is σ = 38896118438400. Its totient is φ = 24152719159296.

The previous prime is 31030104413003. The next prime is 31030104413117. The reversal of 31030104413021 is 12031440103013.

It is a de Polignac number, because none of the positive numbers 2k-31030104413021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030104413521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 722398481 + ... + 722441433.

It is an arithmetic number, because the mean of its divisors is an integer number (607751850600).

Almost surely, 231030104413021 is an apocalyptic number.

It is an amenable number.

31030104413021 is a deficient number, since it is larger than the sum of its proper divisors (7866014025379).

31030104413021 is a wasteful number, since it uses less digits than its factorization.

31030104413021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44358.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31030104413021 its reverse (12031440103013), we get a palindrome (43061544516034).

The spelling of 31030104413021 in words is "thirty-one trillion, thirty billion, one hundred four million, four hundred thirteen thousand, twenty-one".

Divisors: 1 7 19 29 133 157 203 551 1099 1193 2983 3857 4553 8351 20881 22667 31871 34597 42953 86507 158669 187301 242179 300671 605549 657343 816107 1245637 1311107 3558719 4601401 5431729 5712749 6743621 8719459 23667103 24911033 38022103 47205347 51242929 103202851 128128799 165669721 195565009 358700503 722419957 896901593 973615651 1368955063 1486044941 3715735171 6815309557 8045139853 10402314587 26010146197 28234853879 56315978971 152857657207 197643977153 233309055737 1070003600449 1633163390159 4432872059003 31030104413021