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231300131320220 = 225173046632232941
BaseRepresentation
bin110100100101110111000010…
…001010011111000110011100
31010022222002001211210000202112
4310211313002022133012130
5220304110132104221340
62135533451411013152
766501611606625254
oct6445670212370634
91108862054700675
10231300131320220
116777692016a3a6
1221b37621b9a1b8
139c0a67ca83c21
144118db3b80964
151bb19a957d065
hexd25dc229f19c

231300131320220 has 48 divisors (see below), whose sum is σ = 514304563364928. Its totient is φ = 87077371683840.

The previous prime is 231300131320207. The next prime is 231300131320253. The reversal of 231300131320220 is 22023131003132.

231300131320220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 102468950 + ... + 104701890.

It is an arithmetic number, because the mean of its divisors is an integer number (10714678403436).

Almost surely, 2231300131320220 is an apocalyptic number.

231300131320220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231300131320220 is an abundant number, since it is smaller than the sum of its proper divisors (283004432044708).

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

231300131320220 is a wasteful number, since it uses less digits than its factorization.

231300131320220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537630 (or 2537628 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231300131320220 its reverse (22023131003132), we get a palindrome (253323262323352).

The spelling of 231300131320220 in words is "two hundred thirty-one trillion, three hundred billion, one hundred thirty-one million, three hundred twenty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 304663 609326 1218652 1523315 2232941 3046630 4465882 5179271 6093260 8931764 10358542 11164705 20717084 22329410 25896355 37959997 44658820 51792710 75919994 103585420 151839988 189799985 379599970 759199940 680294503883 1360589007766 2721178015532 3401472519415 6802945038830 11565006566011 13605890077660 23130013132022 46260026264044 57825032830055 115650065660110 231300131320220