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2331162005 = 53209145289
BaseRepresentation
bin1000101011110010…
…1011010110010101
320000110111022002112
42022330223112111
514233234141010
61023152520405
7111524356454
oct21274532625
96013438075
102331162005
11a96975577
12550850105
132b1c66003
14181860b9b
15d99c9a05
hex8af2b595

2331162005 has 8 divisors (see below), whose sum is σ = 2798285400. Its totient is φ = 1864335616.

The previous prime is 2331161999. The next prime is 2331162007. The reversal of 2331162005 is 5002611332.

It can be written as a sum of positive squares in 4 ways, for example, as 5414929 + 2325747076 = 2327^2 + 48226^2 .

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 2331162005 - 218 = 2330899861 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331162007) 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 7 ways as a sum of consecutive naturals, for example, 56600 + ... + 88689.

It is an arithmetic number, because the mean of its divisors is an integer number (349785675).

Almost surely, 22331162005 is an apocalyptic number.

It is an amenable number.

2331162005 is a deficient number, since it is larger than the sum of its proper divisors (467123395).

2331162005 is a wasteful number, since it uses less digits than its factorization.

2331162005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148503.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2331162005 is about 48282.1085392923. The cubic root of 2331162005 is about 1325.9408540116.

Adding to 2331162005 its reverse (5002611332), we get a palindrome (7333773337).

The spelling of 2331162005 in words is "two billion, three hundred thirty-one million, one hundred sixty-two thousand, five".

Divisors: 1 5 3209 16045 145289 726445 466232401 2331162005