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131142960 = 243251314011
BaseRepresentation
bin1111101000100…
…01010100110000
3100010202202022200
413310101110300
5232033033320
621002503200
73151460664
oct764212460
9303682280
10131142960
1168032713
1237b04b00
1321228ab0
14135ba8a4
15b7a7290
hex7d11530

131142960 has 120 divisors (see below), whose sum is σ = 474334224. Its totient is φ = 32279040.

The previous prime is 131142943. The next prime is 131142961. The reversal of 131142960 is 69241131.

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (131142961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2355 + ... + 16365.

Almost surely, 2131142960 is an apocalyptic number.

131142960 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 131142960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237167112).

131142960 is an abundant number, since it is smaller than the sum of its proper divisors (343191264).

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

131142960 is a wasteful number, since it uses less digits than its factorization.

131142960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14043 (or 14034 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 131142960 is about 11451.7666759326. The cubic root of 131142960 is about 508.0599883692.

The spelling of 131142960 in words is "one hundred thirty-one million, one hundred forty-two thousand, nine hundred sixty".

Divisors: 1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 30 36 39 40 45 48 52 60 65 72 78 80 90 104 117 120 130 144 156 180 195 208 234 240 260 312 360 390 468 520 585 624 720 780 936 1040 1170 1560 1872 2340 3120 4680 9360 14011 28022 42033 56044 70055 84066 112088 126099 140110 168132 182143 210165 224176 252198 280220 336264 364286 420330 504396 546429 560440 630495 672528 728572 840660 910715 1008792 1092858 1120880 1260990 1457144 1639287 1681320 1821430 2017584 2185716 2521980 2732145 2914288 3278574 3362640 3642860 4371432 5043960 5464290 6557148 7285720 8196435 8742864 10087920 10928580 13114296 14571440 16392870 21857160 26228592 32785740 43714320 65571480 131142960