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2131300001 = 6413324961
BaseRepresentation
bin111111100001001…
…0000111010100001
312111112102020222002
41333002100322201
513331103100001
6551253053345
7103546515425
oct17702207241
95445366862
102131300001
119a4077266
124b5927255
1327c72977c
141630b6b85
15c719b46b
hex7f090ea1

2131300001 has 4 divisors (see below), whose sum is σ = 2134625604. Its totient is φ = 2127974400.

The previous prime is 2131299997. The next prime is 2131300009. The reversal of 2131300001 is 1000031312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1102173601 + 1029126400 = 33199^2 + 32080^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131300001 - 22 = 2131299997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131300009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1661840 + ... + 1663121.

It is an arithmetic number, because the mean of its divisors is an integer number (533656401).

Almost surely, 22131300001 is an apocalyptic number.

It is an amenable number.

2131300001 is a deficient number, since it is larger than the sum of its proper divisors (3325603).

2131300001 is an equidigital number, since it uses as much as digits as its factorization.

2131300001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325602.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 2131300001 is about 46166.0048195639. The cubic root of 2131300001 is about 1286.9100576354.

Adding to 2131300001 its reverse (1000031312), we get a palindrome (3131331313).

The spelling of 2131300001 in words is "two billion, one hundred thirty-one million, three hundred thousand, one".

Divisors: 1 641 3324961 2131300001