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131385139200 = 2133252717599
BaseRepresentation
bin111101001011100101…
…0100010000000000000
3110120010110022121101200
41322113022202000000
54123034043423300
6140205115301200
712330563154030
oct1722712420000
9416113277350
10131385139200
11507a1538777
122156874a800
13c50ab4c123
14650542d8c0
15363e770200
hex1e972a2000

131385139200 has 1008 divisors, whose sum is σ = 570442953600. Its totient is φ = 28217180160.

The previous prime is 131385139199. The next prime is 131385139219. The reversal of 131385139200 is 2931583131.

131385139200 is a `hidden beast` number, since 1 + 3 + 138 + 513 + 9 + 2 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 219340501 + ... + 219341099.

Almost surely, 2131385139200 is an apocalyptic number.

131385139200 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 131385139200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285221476800).

131385139200 is an abundant number, since it is smaller than the sum of its proper divisors (439057814400).

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

131385139200 is a wasteful number, since it uses less digits than its factorization.

131385139200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 131385139200 in words is "one hundred thirty-one billion, three hundred eighty-five million, one hundred thirty-nine thousand, two hundred".