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2201020310231 = 19911060403569
BaseRepresentation
bin100000000001110111000…
…010001010001011010111
321210102012220000122222022
4200001313002022023113
5242030142144411411
64403045035523355
7315006222643331
oct40016702121327
97712186018868
102201020310231
117794a1648186
122b66a52b955b
1312c72b0820c2
147875c288451
153c3c0ce5edb
hex2007708a2d7

2201020310231 has 4 divisors (see below), whose sum is σ = 2212080714000. Its totient is φ = 2189959906464.

The previous prime is 2201020310219. The next prime is 2201020310369. The reversal of 2201020310231 is 1320130201022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2201020310231 is a prime.

It is a super-2 number, since 2×22010203102312 (a number of 25 digits) 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 (2201020313231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5530201586 + ... + 5530201983.

It is an arithmetic number, because the mean of its divisors is an integer number (553020178500).

Almost surely, 22201020310231 is an apocalyptic number.

2201020310231 is a deficient number, since it is larger than the sum of its proper divisors (11060403769).

2201020310231 is a wasteful number, since it uses less digits than its factorization.

2201020310231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11060403768.

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

Adding to 2201020310231 its reverse (1320130201022), we get a palindrome (3521150511253).

The spelling of 2201020310231 in words is "two trillion, two hundred one billion, twenty million, three hundred ten thousand, two hundred thirty-one".

Divisors: 1 199 11060403569 2201020310231