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12020031031030 = 2511216076181649
BaseRepresentation
bin1010111011101010000110…
…1011100000011011110110
31120120002210121222220121121
42232322201223200123312
53033414010420443110
641321532004334154
72350263400660621
oct256724153403366
946502717886547
1012020031031030
113914737178a00
1214216900a435a
1369263a640879
142d7ab6060db8
1515ca0676acda
hexaeea1ae06f6

12020031031030 has 48 divisors (see below), whose sum is σ = 23796583120800. Its totient is φ = 4368199742720.

The previous prime is 12020031031009. The next prime is 12020031031033. The reversal of 12020031031030 is 3013013002021.

It is a super-2 number, since 2×120200310310302 (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12020031030995 and 12020031031013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020031031033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1146355 + ... + 5035294.

It is an arithmetic number, because the mean of its divisors is an integer number (495762148350).

Almost surely, 212020031031030 is an apocalyptic number.

12020031031030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020031031030 is a deficient number, since it is larger than the sum of its proper divisors (11776552089770).

12020031031030 is a wasteful number, since it uses less digits than its factorization.

12020031031030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6183285 (or 6183274 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 12020031031030 its reverse (3013013002021), we get a palindrome (15033044033051).

The spelling of 12020031031030 in words is "twelve trillion, twenty billion, thirty-one million, thirty-one thousand, thirty".

Divisors: 1 2 5 10 11 22 55 110 121 242 605 1210 1607 3214 8035 16070 17677 35354 88385 176770 194447 388894 972235 1944470 6181649 12363298 30908245 61816490 67998139 135996278 339990695 679981390 747979529 1495959058 3739897645 7479795290 9933909943 19867819886 49669549715 99339099430 109273009373 218546018746 546365046865 1092730093730 1202003103103 2404006206206 6010015515515 12020031031030