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131200233221 = 269523193239
BaseRepresentation
bin111101000110000100…
…1001010111100000101
3110112122120101102002002
41322030021022330011
54122144224430341
6140134512155045
712323156403401
oct1721411127405
9415576342062
10131200233221
1150707125112
1221516838a85
13c4ab74b1c5
1464c8a5a101
15362d3e829b
hex1e8c24af05

131200233221 has 8 divisors (see below), whose sum is σ = 131714553600. Its totient is φ = 130686110320.

The previous prime is 131200233211. The next prime is 131200233337. The reversal of 131200233221 is 122332002131.

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 131200233221 - 210 = 131200232197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131200233193 and 131200233202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131200233211) 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, 1360520 + ... + 1453758.

It is an arithmetic number, because the mean of its divisors is an integer number (16464319200).

Almost surely, 2131200233221 is an apocalyptic number.

It is an amenable number.

131200233221 is a deficient number, since it is larger than the sum of its proper divisors (514320379).

131200233221 is an equidigital number, since it uses as much as digits as its factorization.

131200233221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98739.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131200233221 its reverse (122332002131), we get a palindrome (253532235352).

The spelling of 131200233221 in words is "one hundred thirty-one billion, two hundred million, two hundred thirty-three thousand, two hundred twenty-one".

Divisors: 1 269 5231 93239 1407139 25081291 487733209 131200233221