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12113131030 = 25711131210103
BaseRepresentation
bin10110100011111111…
…11011011000010110
31011021011222210221121
423101333323120112
5144301430143110
65321550234154
7606113625550
oct132177733026
934234883847
1012113131030
1151566016a0
1224207b595a
1311b0725070
1482ca6a4d0
154ad66acda
hex2d1ffb616

12113131030 has 64 divisors (see below), whose sum is σ = 29274835968. Its totient is φ = 3485093760.

The previous prime is 12113131021. The next prime is 12113131031. The reversal of 12113131030 is 3013131121.

It is a junction number, because it is equal to n+sod(n) for n = 12113130995 and 12113131013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113131031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 595042 + ... + 615061.

It is an arithmetic number, because the mean of its divisors is an integer number (457419312).

Almost surely, 212113131030 is an apocalyptic number.

12113131030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12113131030 is an abundant number, since it is smaller than the sum of its proper divisors (17161704938).

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

12113131030 is a wasteful number, since it uses less digits than its factorization.

12113131030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210141.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 12113131030 its reverse (3013131121), we get a palindrome (15126262151).

Subtracting from 12113131030 its reverse (3013131121), we obtain a palindrome (9099999909).

The spelling of 12113131030 in words is "twelve billion, one hundred thirteen million, one hundred thirty-one thousand, thirty".

Divisors: 1 2 5 7 10 11 13 14 22 26 35 55 65 70 77 91 110 130 143 154 182 286 385 455 715 770 910 1001 1430 2002 5005 10010 1210103 2420206 6050515 8470721 12101030 13311133 15731339 16941442 26622266 31462678 42353605 66555665 78656695 84707210 93177931 110119373 133111330 157313390 173044729 186355862 220238746 346089458 465889655 550596865 865223645 931779310 1101193730 1211313103 1730447290 2422626206 6056565515 12113131030