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231102221030120 = 235114112810544403
BaseRepresentation
bin110100100010111110101101…
…110010101001001011101000
31010022021011020010122121100002
4310202332231302221023220
5220242334322040430440
62135302521130402132
766451404322130036
oct6442765562511350
91108234203577302
10231102221030120
11676aa9a0a49180
1221b051aa290348
139bc4acc68bcab
14410d59b42b556
151bab7747dc115
hexd22fadca92e8

231102221030120 has 64 divisors (see below), whose sum is σ = 581086294165440. Its totient is φ = 81987484172800.

The previous prime is 231102221030117. The next prime is 231102221030269. The reversal of 231102221030120 is 21030122201132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 231102221030092 and 231102221030101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6405254162 + ... + 6405290241.

It is an arithmetic number, because the mean of its divisors is an integer number (9079473346335).

Almost surely, 2231102221030120 is an apocalyptic number.

231102221030120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231102221030120 is an abundant number, since it is smaller than the sum of its proper divisors (349984073135320).

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

231102221030120 is a wasteful number, since it uses less digits than its factorization.

231102221030120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12810544466 (or 12810544462 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 231102221030120 its reverse (21030122201132), we get a palindrome (252132343231252).

The spelling of 231102221030120 in words is "two hundred thirty-one trillion, one hundred two billion, two hundred twenty-one million, thirty thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 11 20 22 40 41 44 55 82 88 110 164 205 220 328 410 440 451 820 902 1640 1804 2255 3608 4510 9020 18040 12810544403 25621088806 51242177612 64052722015 102484355224 128105444030 140915988433 256210888060 281831976866 512421776120 525232320523 563663953732 704579942165 1050464641046 1127327907464 1409159884330 2100929282092 2626161602615 2818319768660 4201858564184 5252323205230 5636639537320 5777555525753 10504646410460 11555111051506 21009292820920 23110222103012 28887777628765 46220444206024 57775555257530 115551110515060 231102221030120