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231103221310120 = 23543493912720381
BaseRepresentation
bin110100100010111111101001…
…011010011010001010101000
31010022021020210211212002112111
4310202333221122122022220
5220242343344123410440
62135303204302052104
766451441156305205
oct6442775132321250
91108236724762474
10231103221310120
1167700364643365
1221b0542927a034
139bc4c2b996753
14410d65420ccac
151bab7d25264ea
hexd22fe969a2a8

231103221310120 has 64 divisors (see below), whose sum is σ = 532085826666240. Its totient is φ = 90289629830400.

The previous prime is 231103221310109. The next prime is 231103221310151. The reversal of 231103221310120 is 21013122301132.

231103221310120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231103221310091 and 231103221310100.

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, 83592330 + ... + 86312710.

It is an arithmetic number, because the mean of its divisors is an integer number (8313841041660).

Almost surely, 2231103221310120 is an apocalyptic number.

231103221310120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231103221310120 is an abundant number, since it is smaller than the sum of its proper divisors (300982605356120).

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

231103221310120 is a wasteful number, since it uses less digits than its factorization.

231103221310120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769826 (or 2769822 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 231103221310120 its reverse (21013122301132), we get a palindrome (252116343611252).

The spelling of 231103221310120 in words is "two hundred thirty-one trillion, one hundred three billion, two hundred twenty-one million, three hundred ten thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 43 86 172 215 344 430 860 1720 49391 98782 197564 246955 395128 493910 987820 1975640 2123813 2720381 4247626 5440762 8495252 10619065 10881524 13601905 16990504 21238130 21763048 27203810 42476260 54407620 84952520 108815240 116976383 233952766 467905532 584881915 935811064 1169763830 2339527660 4679055320 134362337971 268724675942 537449351884 671811689855 1074898703768 1343623379710 2687246759420 5374493518840 5777580532753 11555161065506 23110322131012 28887902663765 46220644262024 57775805327530 115551610655060 231103221310120