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131245830100 = 225271117044913
BaseRepresentation
bin111101000111011011…
…1000110111111010100
3110112202202011222020101
41322032313012333110
54122242413030400
6140143221343444
712324252102040
oct1721667067724
9415682158211
10131245830100
115072a938790
1221529b67b84
13c4b80243c8
1464d0b29020
15363240356a
hex1e8edc6fd4

131245830100 has 72 divisors (see below), whose sum is σ = 355079648448. Its totient is φ = 40907788800.

The previous prime is 131245830077. The next prime is 131245830103. The reversal of 131245830100 is 1038542131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131245830103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8514757 + ... + 8530156.

It is an arithmetic number, because the mean of its divisors is an integer number (4931661784).

Almost surely, 2131245830100 is an apocalyptic number.

131245830100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131245830100 is an abundant number, since it is smaller than the sum of its proper divisors (223833818348).

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

131245830100 is a wasteful number, since it uses less digits than its factorization.

131245830100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17044945 (or 17044938 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 131245830100 in words is "one hundred thirty-one billion, two hundred forty-five million, eight hundred thirty thousand, one hundred".

Divisors: 1 2 4 5 7 10 11 14 20 22 25 28 35 44 50 55 70 77 100 110 140 154 175 220 275 308 350 385 550 700 770 1100 1540 1925 3850 7700 17044913 34089826 68179652 85224565 119314391 170449130 187494043 238628782 340898260 374988086 426122825 477257564 596571955 749976172 852245650 937470215 1193143910 1312458301 1704491300 1874940430 2386287820 2624916602 2982859775 3749880860 4687351075 5249833204 5965719550 6562291505 9374702150 11931439100 13124583010 18749404300 26249166020 32811457525 65622915050 131245830100