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231203212302211 = 19233157059299107
BaseRepresentation
bin110100100100011100110001…
…010101110001011110000011
31010022121210220101112210020221
4310210130301111301132003
5220301013134322132321
62135421142304043511
766461611063565452
oct6444346125613603
91108553811483227
10231203212302211
1167739805986706
1221b20894003597
139c014a5671066
14411441bda6b99
151bae1d5a81e41
hexd24731571783

231203212302211 has 32 divisors (see below), whose sum is σ = 262150694092800. Its totient is φ = 202748714958240.

The previous prime is 231203212302067. The next prime is 231203212302221. The reversal of 231203212302211 is 112203212302132.

It is a cyclic number.

It is not a de Polignac number, because 231203212302211 - 227 = 231203078084483 is a prime.

It is a super-2 number, since 2×2312032123022112 (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231203212302221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 772828720 + ... + 773127826.

It is an arithmetic number, because the mean of its divisors is an integer number (8192209190400).

Almost surely, 2231203212302211 is an apocalyptic number.

231203212302211 is a deficient number, since it is larger than the sum of its proper divisors (30947481790589).

231203212302211 is a wasteful number, since it uses less digits than its factorization.

231203212302211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356239.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 231203212302211 its reverse (112203212302132), we get a palindrome (343406424604343).

The spelling of 231203212302211 in words is "two hundred thirty-one trillion, two hundred three billion, two hundred twelve million, three hundred two thousand, two hundred eleven".

Divisors: 1 19 23 31 437 589 713 13547 57059 299107 1084121 1312357 1768829 5683033 6879461 9272317 24934783 33607751 40683067 130709759 176174023 213263291 772978273 4052002529 17066746313 324268179947 392535165199 529069135703 7458168138781 10052313578357 12168590121169 231203212302211