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231104120 = 235132172011
BaseRepresentation
bin11011100011001…
…01111001111000
3121002212022020212
431301211321320
5433130312440
634533210252
75504231642
oct1561457170
9532768225
10231104120
111094a7a45
1265490988
1338b57a00
142299b892
1515450465
hexdc65e78

231104120 has 96 divisors (see below), whose sum is σ = 596477520. Its totient is φ = 80271360.

The previous prime is 231104117. The next prime is 231104131. The reversal of 231104120 is 21401132.

It is a super-2 number, since 2×2311041202 = 106818228561948800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231104095 and 231104104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113915 + ... + 115925.

Almost surely, 2231104120 is an apocalyptic number.

231104120 is a gapful number since it is divisible by the number (20) 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 231104120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298238760).

231104120 is an abundant number, since it is smaller than the sum of its proper divisors (365373400).

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

231104120 is a wasteful number, since it uses less digits than its factorization.

231104120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065 (or 2048 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 231104120 is about 15202.1090642055. The cubic root of 231104120 is about 613.6714175228.

Adding to 231104120 its reverse (21401132), we get a palindrome (252505252).

The spelling of 231104120 in words is "two hundred thirty-one million, one hundred four thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 13 17 20 26 34 40 52 65 68 85 104 130 136 169 170 221 260 338 340 442 520 676 680 845 884 1105 1352 1690 1768 2011 2210 2873 3380 4022 4420 5746 6760 8044 8840 10055 11492 14365 16088 20110 22984 26143 28730 34187 40220 52286 57460 68374 80440 104572 114920 130715 136748 170935 209144 261430 273496 339859 341870 444431 522860 679718 683740 888862 1045720 1359436 1367480 1699295 1777724 2222155 2718872 3398590 3555448 4444310 5777603 6797180 8888620 11555206 13594360 17777240 23110412 28888015 46220824 57776030 115552060 231104120