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131317130124 = 223347711991831
BaseRepresentation
bin111101001001100011…
…1000110001110001100
3110112221201100101111000
41322103013012032030
54122414141130444
6140154245500300
712326106121605
oct1722307061614
9415851311430
10131317130124
1150767107524
1221549a11690
13c4c9a2987b
1464da3a8dac
1536387d9469
hex1e931c638c

131317130124 has 192 divisors, whose sum is σ = 354557952000. Its totient is φ = 42002452800.

The previous prime is 131317130123. The next prime is 131317130141. The reversal of 131317130124 is 421031713131.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (131317130123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71717889 + ... + 71719719.

It is an arithmetic number, because the mean of its divisors is an integer number (1846656000).

Almost surely, 2131317130124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131317130124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177278976000).

131317130124 is an abundant number, since it is smaller than the sum of its proper divisors (223240821876).

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

131317130124 is a wasteful number, since it uses less digits than its factorization.

131317130124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161 (or 2153 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

Adding to 131317130124 its reverse (421031713131), we get a palindrome (552348843255).

The spelling of 131317130124 in words is "one hundred thirty-one billion, three hundred seventeen million, one hundred thirty thousand, one hundred twenty-four".