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311168132190 = 232527136734763
BaseRepresentation
bin1001000011100110001…
…00001110010001011110
31002202011211201220222200
410201303010032101132
520044233020212230
6354540524552330
731324015324446
oct4416304162136
91082154656880
10311168132190
1110aa69331313
12503816b26a6
132345c833356
14110bc49b126
158162db0160
hex487310e45e

311168132190 has 96 divisors (see below), whose sum is σ = 814258538496. Its totient is φ = 82444340160.

The previous prime is 311168132189. The next prime is 311168132237. The reversal of 311168132190 is 91231861113.

It is a happy number.

311168132190 is a `hidden beast` number, since 311 + 16 + 8 + 1 + 321 + 9 + 0 = 666.

It is a super-2 number, since 2×3111681321902 (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 8933749 + ... + 8968511.

It is an arithmetic number, because the mean of its divisors is an integer number (8481859776).

Almost surely, 2311168132190 is an apocalyptic number.

311168132190 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

311168132190 is an abundant number, since it is smaller than the sum of its proper divisors (503090406306).

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

311168132190 is a wasteful number, since it uses less digits than its factorization.

311168132190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35414 (or 35411 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

It can be divided in two parts, 3111 and 68132190, that added together give a triangular number (68135301 = T11673).

The spelling of 311168132190 in words is "three hundred eleven billion, one hundred sixty-eight million, one hundred thirty-two thousand, one hundred ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 271 367 542 734 813 1101 1355 1626 1835 2202 2439 2710 3303 3670 4065 4878 5505 6606 8130 11010 12195 16515 24390 33030 34763 69526 99457 104289 173815 198914 208578 298371 312867 347630 497285 521445 596742 625734 895113 994570 1042890 1491855 1564335 1790226 2983710 3128670 4475565 8951130 9420773 12758021 18841546 25516042 28262319 38274063 47103865 56524638 63790105 76548126 84786957 94207730 114822189 127580210 141311595 169573914 191370315 229644378 282623190 382740630 423934785 574110945 847869570 1148221890 3457423691 6914847382 10372271073 17287118455 20744542146 31116813219 34574236910 51861355365 62233626438 103722710730 155584066095 311168132190