Search a number
-
+
31112200011310 = 251117131127004123
BaseRepresentation
bin1110001001011110111111…
…01000010011111000101110
311002011022000201020022111121
413010233133220103320232
513034220241200330220
6150100425233211154
76360532214452645
oct704573750237056
9132138021208447
1031112200011310
119a056788a4120
1235a5904a00aba
131448b3893b512
14797ba4c5835c
1538e476857eaa
hex1c4bdfa13e2e

31112200011310 has 64 divisors (see below), whose sum is σ = 65180548502784. Its totient is φ = 10566742950400.

The previous prime is 31112200011209. The next prime is 31112200011329. The reversal of 31112200011310 is 1311000221113.

It is a happy number.

It is a super-2 number, since 2×311122000113102 (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63257092 + ... + 63747031.

It is an arithmetic number, because the mean of its divisors is an integer number (1018446070356).

Almost surely, 231112200011310 is an apocalyptic number.

31112200011310 is an abundant number, since it is smaller than the sum of its proper divisors (34068348491474).

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

31112200011310 is a wasteful number, since it uses less digits than its factorization.

31112200011310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127004289.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 31112200011310 its reverse (1311000221113), we get a palindrome (32423200232423).

The spelling of 31112200011310 in words is "thirty-one trillion, one hundred twelve billion, two hundred million, eleven thousand, three hundred ten".

Divisors: 1 2 5 10 11 17 22 34 55 85 110 131 170 187 262 374 655 935 1310 1441 1870 2227 2882 4454 7205 11135 14410 22270 24497 48994 122485 244970 127004123 254008246 635020615 1270041230 1397045353 2159070091 2794090706 4318140182 6985226765 10795350455 13970453530 16637540113 21590700910 23749771001 33275080226 47499542002 83187700565 118748855005 166375401130 183012941243 237497710010 282838181921 366025882486 565676363842 915064706215 1414190909605 1830129412430 2828381819210 3111220001131 6222440002262 15556100005655 31112200011310