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131113201 = 297144131
BaseRepresentation
bin1111101000010…
…10000011110001
3100010201020111111
413310022003301
5232031110301
621002113321
73151305142
oct764120361
9303636444
10131113201
116801231a
1237aab841
132121839b
14135adac9
15b79d551
hex7d0a0f1

131113201 has 4 divisors (see below), whose sum is σ = 131160304. Its totient is φ = 131066100.

The previous prime is 131113193. The next prime is 131113207. The reversal of 131113201 is 102311131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131113201 - 23 = 131113193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131113207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19095 + ... + 25036.

It is an arithmetic number, because the mean of its divisors is an integer number (32790076).

Almost surely, 2131113201 is an apocalyptic number.

It is an amenable number.

131113201 is a deficient number, since it is larger than the sum of its proper divisors (47103).

131113201 is an equidigital number, since it uses as much as digits as its factorization.

131113201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47102.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 131113201 is about 11450.4672830413. The cubic root of 131113201 is about 508.0215557534.

Adding to 131113201 its reverse (102311131), we get a palindrome (233424332).

The spelling of 131113201 in words is "one hundred thirty-one million, one hundred thirteen thousand, two hundred one".

Divisors: 1 2971 44131 131113201