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12120230310 = 2353317731579
BaseRepresentation
bin10110100100110110…
…00000100110100110
31011021200100111022220
423102123000212212
5144310234332220
65322402333210
7606231154266
oct132233004646
934250314286
1012120230310
11515a610471
12242305a206
1311b203c516
1482d9977a6
154ae0be540
hex2d26c09a6

12120230310 has 64 divisors (see below), whose sum is σ = 29232679680. Its totient is φ = 3216090240.

The previous prime is 12120230281. The next prime is 12120230329. The reversal of 12120230310 is 1303202121.

It is a super-2 number, since 2×121202303102 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12120230310.

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, 7675101 + ... + 7676679.

It is an arithmetic number, because the mean of its divisors is an integer number (456760620).

Almost surely, 212120230310 is an apocalyptic number.

12120230310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12120230310 is an abundant number, since it is smaller than the sum of its proper divisors (17112449370).

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

12120230310 is a wasteful number, since it uses less digits than its factorization.

12120230310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12120230310 its reverse (1303202121), we get a palindrome (13423432431).

The spelling of 12120230310 in words is "twelve billion, one hundred twenty million, two hundred thirty thousand, three hundred ten".

Divisors: 1 2 3 5 6 10 15 30 331 662 773 993 1546 1579 1655 1986 2319 3158 3310 3865 4638 4737 4965 7730 7895 9474 9930 11595 15790 23190 23685 47370 255863 511726 522649 767589 1045298 1220567 1279315 1535178 1567947 2441134 2558630 2613245 3135894 3661701 3837945 5226490 6102835 7323402 7675890 7839735 12205670 15679470 18308505 36617010 404007677 808015354 1212023031 2020038385 2424046062 4040076770 6060115155 12120230310