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12310121230 = 2511317491719
BaseRepresentation
bin10110111011011110…
…11000101100001110
31011202220122221200221
423131233120230032
5200202342334410
65353304341554
7614025206161
oct133557305416
934686587627
1012310121230
115247819310
1224767748ba
131212497404
1484aca7ad8
154c0acd4da
hex2ddbd8b0e

12310121230 has 64 divisors (see below), whose sum is σ = 24332037120. Its totient is φ = 4447004800.

The previous prime is 12310121207. The next prime is 12310121273. The reversal of 12310121230 is 3212101321.

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, 17120811 + ... + 17121529.

It is an arithmetic number, because the mean of its divisors is an integer number (380188080).

Almost surely, 212310121230 is an apocalyptic number.

12310121230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12310121230 is a deficient number, since it is larger than the sum of its proper divisors (12021915890).

12310121230 is a wasteful number, since it uses less digits than its factorization.

12310121230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12310121230 its reverse (3212101321), we get a palindrome (15522222551).

The spelling of 12310121230 in words is "twelve billion, three hundred ten million, one hundred twenty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 317 491 634 719 982 1438 1585 2455 3170 3487 3595 4910 5401 6974 7190 7909 10802 15818 17435 27005 34870 39545 54010 79090 155647 227923 311294 353029 455846 706058 778235 1139615 1556470 1712117 1765145 2279230 2507153 3424234 3530290 3883319 5014306 7766638 8560585 12535765 17121170 19416595 25071530 38833190 111910193 223820386 559550965 1119101930 1231012123 2462024246 6155060615 12310121230