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231232313130 = 23571384700481
BaseRepresentation
bin1101011101011010000…
…1010001011100101010
3211002211222101120200120
43113112201101130222
512242030433010010
6254120542544110
722464103142340
oct3272641213452
9732758346616
10231232313130
118a079681335
1238993298036
1318a60ab0530
14b29806b990
15603536ce70
hex35d685172a

231232313130 has 64 divisors (see below), whose sum is σ = 683024686848. Its totient is φ = 48787476480.

The previous prime is 231232313129. The next prime is 231232313183. The reversal of 231232313130 is 31313232132.

231232313130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231232313130.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42347511 + ... + 42352970.

It is an arithmetic number, because the mean of its divisors is an integer number (10672260732).

Almost surely, 2231232313130 is an apocalyptic number.

231232313130 is an abundant number, since it is smaller than the sum of its proper divisors (451792373718).

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

231232313130 is a wasteful number, since it uses less digits than its factorization.

231232313130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84700511.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 231232313130 its reverse (31313232132), we get a palindrome (262545545262).

The spelling of 231232313130 in words is "two hundred thirty-one billion, two hundred thirty-two million, three hundred thirteen thousand, one hundred thirty".

Divisors: 1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 42 65 70 78 91 105 130 182 195 210 273 390 455 546 910 1365 2730 84700481 169400962 254101443 423502405 508202886 592903367 847004810 1101106253 1185806734 1270507215 1778710101 2202212506 2541014430 2964516835 3303318759 3557420202 5505531265 5929033670 6606637518 7707743771 8893550505 11011062530 15415487542 16516593795 17787101010 23123231313 33033187590 38538718855 46246462626 77077437710 115616156565 231232313130