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2112230231 = 238310910151
BaseRepresentation
bin111110111100110…
…0001001101010111
312110012112102011022
41331321201031113
513311212331411
6545332231355
7103225442426
oct17571411527
95405472138
102112230231
11994331921
124ab46b55b
132787b0897
141607512bd
15c5680edb
hex7de61357

2112230231 has 16 divisors (see below), whose sum is σ = 2251307520. Its totient is φ = 1977544800.

The previous prime is 2112230221. The next prime is 2112230249. The reversal of 2112230231 is 1320322112.

It is a cyclic number.

It is not a de Polignac number, because 2112230231 - 218 = 2111968087 is a prime.

It is a super-2 number, since 2×21122302312 = 8923033097500626722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112230201) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 203006 + ... + 213156.

It is an arithmetic number, because the mean of its divisors is an integer number (140706720).

Almost surely, 22112230231 is an apocalyptic number.

2112230231 is a deficient number, since it is larger than the sum of its proper divisors (139077289).

2112230231 is a wasteful number, since it uses less digits than its factorization.

2112230231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10366.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2112230231 is about 45959.0059835937. The cubic root of 2112230231 is about 1283.0603511274.

Adding to 2112230231 its reverse (1320322112), we get a palindrome (3432552343).

The spelling of 2112230231 in words is "two billion, one hundred twelve million, two hundred thirty thousand, two hundred thirty-one".

Divisors: 1 23 83 109 1909 2507 9047 10151 208081 233473 842533 1106459 19378259 25448557 91836097 2112230231