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2131200007 = 47351712893
BaseRepresentation
bin111111100000111…
…1000100000000111
312111112020011210121
41333001320200013
513331041400012
6551251002411
7103545621046
oct17701704007
95445204717
102131200007
119a4009122
124b5899407
1327c6c30c1
1416308c55d
15c717ba07
hex7f078807

2131200007 has 8 divisors (see below), whose sum is σ = 2177332416. Its totient is φ = 2085100512.

The previous prime is 2131199989. The next prime is 2131200011. The reversal of 2131200007 is 7000021312.

It is a happy number.

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 2131200007 - 223 = 2122811399 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 (2131200107) 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, 158853 + ... + 171745.

It is an arithmetic number, because the mean of its divisors is an integer number (272166552).

Almost surely, 22131200007 is an apocalyptic number.

2131200007 is a deficient number, since it is larger than the sum of its proper divisors (46132409).

2131200007 is a wasteful number, since it uses less digits than its factorization.

2131200007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16457.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 2131200007 is about 46164.9218238264. The cubic root of 2131200007 is about 1286.8899313750.

Adding to 2131200007 its reverse (7000021312), we get a palindrome (9131221319).

The spelling of 2131200007 in words is "two billion, one hundred thirty-one million, two hundred thousand, seven".

Divisors: 1 47 3517 12893 165299 605971 45344681 2131200007