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231010164 = 223371127779
BaseRepresentation
bin11011100010011…
…10111101110100
3121002200112101000
431301032331310
5433114311124
634531203300
75503361010
oct1561167564
9532615330
10231010164
111094433a0
1265446530
1338b24008
1422975540
15154326c9
hexdc4ef74

231010164 has 96 divisors (see below), whose sum is σ = 746726400. Its totient is φ = 60000480.

The previous prime is 231010103. The next prime is 231010223. The reversal of 231010164 is 461010132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 31 ways as a sum of consecutive naturals, for example, 5574 + ... + 22205.

It is an arithmetic number, because the mean of its divisors is an integer number (7778400).

Almost surely, 2231010164 is an apocalyptic number.

It is an amenable number.

231010164 is an abundant number, since it is smaller than the sum of its proper divisors (515716236).

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

231010164 is a wasteful number, since it uses less digits than its factorization.

231010164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27810 (or 27802 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 231010164 is about 15199.0185209440. The cubic root of 231010164 is about 613.5882429965.

Adding to 231010164 its reverse (461010132), we get a palindrome (692020296).

The spelling of 231010164 in words is "two hundred thirty-one million, ten thousand, one hundred sixty-four".

Divisors: 1 2 3 4 6 7 9 11 12 14 18 21 22 27 28 33 36 42 44 54 63 66 77 84 99 108 126 132 154 189 198 231 252 297 308 378 396 462 594 693 756 924 1188 1386 2079 2772 4158 8316 27779 55558 83337 111116 166674 194453 250011 305569 333348 388906 500022 583359 611138 750033 777812 916707 1000044 1166718 1222276 1500066 1750077 1833414 2138983 2333436 2750121 3000132 3500154 3666828 4277966 5250231 5500242 6416949 7000308 8250363 8555932 10500462 11000484 12833898 16500726 19250847 21000924 25667796 33001452 38501694 57752541 77003388 115505082 231010164