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131310000 = 2432541459
BaseRepresentation
bin1111101001110…
…10000110110000
3100011002020110100
413310322012300
5232103410000
621010232400
73153054663
oct764720660
9304066410
10131310000
1168137168
1237b85700
1321286b33
14136216da
15b7dba00
hex7d3a1b0

131310000 has 150 divisors (see below), whose sum is σ = 459524780. Its totient is φ = 34992000.

The previous prime is 131309993. The next prime is 131310043. The reversal of 131310000 is 13131.

It is a tau number, because it is divible by the number of its divisors (150).

It is a super-2 number, since 2×1313100002 = 34484632200000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 89271 + ... + 90729.

Almost surely, 2131310000 is an apocalyptic number.

131310000 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 131310000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229762390).

131310000 is an abundant number, since it is smaller than the sum of its proper divisors (328214780).

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

131310000 is a wasteful number, since it uses less digits than its factorization.

131310000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 9.

The square root of 131310000 is about 11459.0575528706. The cubic root of 131310000 is about 508.2756063325.

Adding to 131310000 its reverse (13131), we get a palindrome (131323131).

Multiplying 131310000 by its reverse (13131), we get a square (1724231610000 = 13131002).

131310000 divided by its reverse (13131) gives a 4-th power (10000 = 104).

The spelling of 131310000 in words is "one hundred thirty-one million, three hundred ten thousand".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 30 36 40 45 48 50 60 72 75 80 90 100 120 125 144 150 180 200 225 240 250 300 360 375 400 450 500 600 625 720 750 900 1000 1125 1200 1250 1459 1500 1800 1875 2000 2250 2500 2918 3000 3600 3750 4377 4500 5000 5625 5836 6000 7295 7500 8754 9000 10000 11250 11672 13131 14590 15000 17508 18000 21885 22500 23344 26262 29180 30000 35016 36475 43770 45000 52524 58360 65655 70032 72950 87540 90000 105048 109425 116720 131310 145900 175080 182375 210096 218850 262620 291800 328275 350160 364750 437700 525240 547125 583600 656550 729500 875400 911875 1050480 1094250 1313100 1459000 1641375 1750800 1823750 2188500 2626200 2735625 2918000 3282750 3647500 4377000 5252400 5471250 6565500 7295000 8206875 8754000 10942500 13131000 14590000 16413750 21885000 26262000 32827500 43770000 65655000 131310000