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131203130100 = 223527219469757
BaseRepresentation
bin111101000110001010…
…0001110001011110100
3110112122202211120211220
41322030110032023310
54122201000130400
6140135054230340
712323223130200
oct1721424161364
9415582746756
10131203130100
1150708823629
12215177b53b0
13c4ac223933
1464c91b1b00
15362d7bb7a0
hex1e8c50e2f4

131203130100 has 216 divisors, whose sum is σ = 464834936160. Its totient is φ = 28410842880.

The previous prime is 131203130099. The next prime is 131203130117. The reversal of 131203130100 is 1031302131.

It is a super-2 number, since 2×1312031301002 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 131203130100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 44422 + ... + 514178.

Almost surely, 2131203130100 is an apocalyptic number.

131203130100 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 131203130100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232417468080).

131203130100 is an abundant number, since it is smaller than the sum of its proper divisors (333631806060).

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

131203130100 is a wasteful number, since it uses less digits than its factorization.

131203130100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469807 (or 469793 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 131203130100 its reverse (1031302131), we get a palindrome (132234432231).

The spelling of 131203130100 in words is "one hundred thirty-one billion, two hundred three million, one hundred thirty thousand, one hundred".