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331146216 = 233231891667
BaseRepresentation
bin10011101111001…
…110001111101000
3212002002222012200
4103233032033220
51134233134331
652505340200
711130460602
oct2357161750
9762088180
10331146216
1115aa18065
1292a97660
13537b470b
1431da0172
151e1125e6
hex13bce3e8

331146216 has 96 divisors (see below), whose sum is σ = 936748800. Its totient is φ = 105557760.

The previous prime is 331146169. The next prime is 331146223. The reversal of 331146216 is 612641133.

331146216 is a `hidden beast` number, since 3 + 31 + 1 + 4 + 621 + 6 = 666.

It is a super-2 number, since 2×3311462162 = 219315632742237312, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 331146216.

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, 197815 + ... + 199481.

It is an arithmetic number, because the mean of its divisors is an integer number (9757800).

Almost surely, 2331146216 is an apocalyptic number.

331146216 is a gapful number since it is divisible by the number (36) 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 331146216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468374400).

331146216 is an abundant number, since it is smaller than the sum of its proper divisors (605602584).

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

331146216 is a wasteful number, since it uses less digits than its factorization.

331146216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799 (or 1792 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 331146216 is about 18197.4233340877. The cubic root of 331146216 is about 691.8414830648.

Adding to 331146216 its reverse (612641133), we get a palindrome (943787349).

The spelling of 331146216 in words is "three hundred thirty-one million, one hundred forty-six thousand, two hundred sixteen".

Divisors: 1 2 3 4 6 8 9 12 18 24 31 36 62 72 89 93 124 178 186 248 267 279 356 372 534 558 712 744 801 1068 1116 1602 1667 2136 2232 2759 3204 3334 5001 5518 6408 6668 8277 10002 11036 13336 15003 16554 20004 22072 24831 30006 33108 40008 49662 51677 60012 66216 99324 103354 120024 148363 155031 198648 206708 296726 310062 413416 445089 465093 593452 620124 890178 930186 1186904 1240248 1335267 1780356 1860372 2670534 3560712 3720744 4599253 5341068 9198506 10682136 13797759 18397012 27595518 36794024 41393277 55191036 82786554 110382072 165573108 331146216