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207040103281 = 11187310049027
BaseRepresentation
bin1100000011010010001…
…1010100001101110001
3201210101222110222122101
43000310203110031301
511343004231301111
6235040215540401
720646434561314
oct3006443241561
9653358428571
10207040103281
117a894816a80
123416138a701
13166a6a2696b
14a0410ba97b
1555bb560bc1
hex30348d4371

207040103281 has 8 divisors (see below), whose sum is σ = 225982541664. Its totient is φ = 188117766720.

The previous prime is 207040103269. The next prime is 207040103299. The reversal of 207040103281 is 182301040702.

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 207040103281 - 29 = 207040102769 is a prime.

It is a super-2 number, since 2×2070401032812 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (207040103261) 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, 5003911 + ... + 5045116.

It is an arithmetic number, because the mean of its divisors is an integer number (28247817708).

Almost surely, 2207040103281 is an apocalyptic number.

It is an amenable number.

207040103281 is a deficient number, since it is larger than the sum of its proper divisors (18942438383).

207040103281 is a wasteful number, since it uses less digits than its factorization.

207040103281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050911.

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 207040103281 its reverse (182301040702), we get a palindrome (389341143983).

The spelling of 207040103281 in words is "two hundred seven billion, forty million, one hundred three thousand, two hundred eighty-one".

Divisors: 1 11 1873 20603 10049027 110539297 18821827571 207040103281