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131484144 = 243112931277
BaseRepresentation
bin1111101011001…
…00100111110000
3100011102002100010
413311210213300
5232124443034
621014054520
73154411461
oct765444760
9304362303
10131484144
1168245a90
123804a440
132131818c
1413668d68
15b8233e9
hex7d649f0

131484144 has 160 divisors (see below), whose sum is σ = 397117440. Its totient is φ = 37094400.

The previous prime is 131484139. The next prime is 131484151. The reversal of 131484144 is 441484131.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 474534 + ... + 474810.

It is an arithmetic number, because the mean of its divisors is an integer number (2481984).

Almost surely, 2131484144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131484144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198558720).

131484144 is an abundant number, since it is smaller than the sum of its proper divisors (265633296).

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

131484144 is a wasteful number, since it uses less digits than its factorization.

131484144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 353 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

The square root of 131484144 is about 11466.6535658840. The cubic root of 131484144 is about 508.5001996540.

It can be divided in two parts, 1314 and 84144, that added together give a palindrome (85458).

The spelling of 131484144 in words is "one hundred thirty-one million, four hundred eighty-four thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 11 12 16 22 24 29 31 33 44 48 58 62 66 87 88 93 116 124 132 174 176 186 232 248 264 277 319 341 348 372 464 496 528 554 638 682 696 744 831 899 957 1023 1108 1276 1364 1392 1488 1662 1798 1914 2046 2216 2552 2697 2728 3047 3324 3596 3828 4092 4432 5104 5394 5456 6094 6648 7192 7656 8033 8184 8587 9141 9889 10788 12188 13296 14384 15312 16066 16368 17174 18282 19778 21576 24099 24376 25761 29667 32132 34348 36564 39556 43152 48198 48752 51522 59334 64264 68696 73128 79112 88363 94457 96396 103044 118668 128528 137392 146256 158224 176726 188914 192792 206088 237336 249023 265089 283371 353452 377828 385584 412176 474672 498046 530178 566742 706904 747069 755656 996092 1060356 1133484 1413808 1494138 1511312 1992184 2120712 2266968 2739253 2988276 3984368 4241424 4533936 5478506 5976552 8217759 10957012 11953104 16435518 21914024 32871036 43828048 65742072 131484144