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131488968 = 233131941541
BaseRepresentation
bin1111101011001…
…01110011001000
3100011102022221210
413311211303020
5232130121333
621014133120
73154431522
oct765456310
9304368853
10131488968
1168249676
12380511a0
132131a430
141366aa12
15b824a63
hex7d65cc8

131488968 has 128 divisors (see below), whose sum is σ = 382435200. Its totient is φ = 37324800.

The previous prime is 131488963. The next prime is 131488979. The reversal of 131488968 is 869884131.

131488968 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (131488961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242778 + ... + 243318.

It is an arithmetic number, because the mean of its divisors is an integer number (2987775).

Almost surely, 2131488968 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 131488968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191217600).

131488968 is an abundant number, since it is smaller than the sum of its proper divisors (250946232).

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

131488968 is a wasteful number, since it uses less digits than its factorization.

131488968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 619 counting only the distinct ones).

The product of its digits is 331776, while the sum is 48.

The square root of 131488968 is about 11466.8639130322. The cubic root of 131488968 is about 508.5064183378.

The spelling of 131488968 in words is "one hundred thirty-one million, four hundred eighty-eight thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 13 19 24 26 38 39 41 52 57 76 78 82 104 114 123 152 156 164 228 246 247 312 328 456 492 494 533 541 741 779 984 988 1066 1082 1482 1558 1599 1623 1976 2132 2164 2337 2964 3116 3198 3246 4264 4328 4674 5928 6232 6396 6492 7033 9348 10127 10279 12792 12984 14066 18696 20254 20558 21099 22181 28132 30381 30837 40508 41116 42198 44362 56264 60762 61674 66543 81016 82232 84396 88724 121524 123348 133086 133627 168792 177448 243048 246696 266172 267254 288353 400881 421439 532344 534508 576706 801762 842878 865059 1069016 1153412 1264317 1603524 1685756 1730118 2306824 2528634 3207048 3371512 3460236 5057268 5478707 6920472 10114536 10957414 16436121 21914828 32872242 43829656 65744484 131488968