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2105316911 = 28161712143
BaseRepresentation
bin111110101111100…
…1001011000101111
312102201112011212102
41331133021120233
513302430120121
6544524125315
7103112620115
oct17537113057
95381464772
102105316911
1199043a835
124a909683b
1327722cc69
1415d871ab5
15c4c6790b
hex7d7c962f

2105316911 has 8 divisors (see below), whose sum is σ = 2116407744. Its totient is φ = 2094252160.

The previous prime is 2105316901. The next prime is 2105316929. The reversal of 2105316911 is 1196135012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2105316911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105316901) 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, 167306 + ... + 179448.

It is an arithmetic number, because the mean of its divisors is an integer number (264550968).

Almost surely, 22105316911 is an apocalyptic number.

2105316911 is a deficient number, since it is larger than the sum of its proper divisors (11090833).

2105316911 is a wasteful number, since it uses less digits than its factorization.

2105316911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13041.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 2105316911 is about 45883.7325312577. The cubic root of 2105316911 is about 1281.6590042360.

The spelling of 2105316911 in words is "two billion, one hundred five million, three hundred sixteen thousand, nine hundred eleven".

Divisors: 1 281 617 12143 173377 3412183 7492231 2105316911