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201103012231 = 11161311334217
BaseRepresentation
bin1011101101001010101…
…1000111000110000111
3201020002012210111211021
42323102223013012013
511243324332342411
6232215131252011
720346343254052
oct2732253070607
9636065714737
10201103012231
1178318453660
1232b84baa007
1315c6b9b5c34
149a3a7a5a99
155370202a71
hex2ed2ac7187

201103012231 has 8 divisors (see below), whose sum is σ = 219521134224. Its totient is φ = 182707561920.

The previous prime is 201103012219. The next prime is 201103012247. The reversal of 201103012231 is 132210301102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201103012231 - 217 = 201102881159 is a prime.

It is a super-2 number, since 2×2011030122312 (a number of 23 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 (201103012211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5649366 + ... + 5684851.

It is an arithmetic number, because the mean of its divisors is an integer number (27440141778).

Almost surely, 2201103012231 is an apocalyptic number.

201103012231 is a deficient number, since it is larger than the sum of its proper divisors (18418121993).

201103012231 is a wasteful number, since it uses less digits than its factorization.

201103012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11335841.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 201103012231 its reverse (132210301102), we get a palindrome (333313313333).

The spelling of 201103012231 in words is "two hundred one billion, one hundred three million, twelve thousand, two hundred thirty-one".

Divisors: 1 11 1613 17743 11334217 124676387 18282092021 201103012231