Search a number
-
+
131206208000 = 295372910099
BaseRepresentation
bin111101000110001111…
…1111101101000000000
3110112122222121221221012
41322030133331220000
54122202242124000
6140135244220052
712323261236520
oct1721437755000
9415588557835
10131206208000
115070a53604a
122151883a628
13c4aca6088a
1464c9773680
15362dbc8735
hex1e8c7fda00

131206208000 has 320 divisors, whose sum is σ = 386841312000. Its totient is φ = 43429478400.

The previous prime is 131206207987. The next prime is 131206208039. The reversal of 131206208000 is 802602131.

It is a tau number, because it is divible by the number of its divisors (320).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12986951 + ... + 12997049.

It is an arithmetic number, because the mean of its divisors is an integer number (1208879100).

Almost surely, 2131206208000 is an apocalyptic number.

131206208000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131206208000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193420656000).

131206208000 is an abundant number, since it is smaller than the sum of its proper divisors (255635104000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131206208000 is an equidigital number, since it uses as much as digits as its factorization.

131206208000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10168 (or 10142 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 131206208000 in words is "one hundred thirty-one billion, two hundred six million, two hundred eight thousand".