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131024144200 = 235217109735129
BaseRepresentation
bin111101000000110100…
…1011100011101001000
3110112012022001011100111
41322001221130131020
54121314140103300
6140105222044104
712315620564335
oct1720151343510
9415168034314
10131024144200
11506267938a4
1221487879634
13c481116511
1464ad4dd98c
15361cc139ba
hex1e81a5c748

131024144200 has 96 divisors (see below), whose sum is σ = 322853833800. Its totient is φ = 49280368640.

The previous prime is 131024144123. The next prime is 131024144233. The reversal of 131024144200 is 2441420131.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 48191364 + 130975952836 = 6942^2 + 361906^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3712236 + ... + 3747364.

Almost surely, 2131024144200 is an apocalyptic number.

131024144200 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 131024144200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161426916900).

131024144200 is an abundant number, since it is smaller than the sum of its proper divisors (191829689600).

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

131024144200 is a wasteful number, since it uses less digits than its factorization.

131024144200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36259 (or 36250 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 131024144200 its reverse (2441420131), we get a palindrome (133465564331).

The spelling of 131024144200 in words is "one hundred thirty-one billion, twenty-four million, one hundred forty-four thousand, two hundred".

Divisors: 1 2 4 5 8 10 17 20 25 34 40 50 68 85 100 136 170 200 340 425 680 850 1097 1700 2194 3400 4388 5485 8776 10970 18649 21940 27425 35129 37298 43880 54850 70258 74596 93245 109700 140516 149192 175645 186490 219400 281032 351290 372980 466225 597193 702580 745960 878225 932450 1194386 1405160 1756450 1864900 2388772 2985965 3512900 3729800 4777544 5971930 7025800 11943860 14929825 23887720 29859650 38536513 59719300 77073026 119438600 154146052 192682565 308292104 385365130 655120721 770730260 963412825 1310241442 1541460520 1926825650 2620482884 3275603605 3853651300 5240965768 6551207210 7707302600 13102414420 16378018025 26204828840 32756036050 65512072100 131024144200