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120231230130 = 232511211040517
BaseRepresentation
bin110111111111001010…
…1101111101010110010
3102111100010021022121100
41233332111233222302
53432213143331010
6131122232305230
711454304410504
oct1577625575262
9374303238540
10120231230130
1146a98438800
121b375242216
13b45108752b
145b67d37d74
1531da42d2c0
hex1bfe56fab2

120231230130 has 72 divisors (see below), whose sum is σ = 343603001196. Its totient is φ = 29146962240.

The previous prime is 120231230129. The next prime is 120231230179. The reversal of 120231230130 is 31032132021.

120231230130 is a `hidden beast` number, since 1 + 20 + 2 + 312 + 301 + 30 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 118307793681 + 1923436449 = 343959^2 + 43857^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5509369 + ... + 5531148.

Almost surely, 2120231230130 is an apocalyptic number.

120231230130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120231230130 is an abundant number, since it is smaller than the sum of its proper divisors (223371771066).

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

120231230130 is a wasteful number, since it uses less digits than its factorization.

120231230130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11040552 (or 11040538 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 120231230130 its reverse (31032132021), we get a palindrome (151263362151).

The spelling of 120231230130 in words is "one hundred twenty billion, two hundred thirty-one million, two hundred thirty thousand, one hundred thirty".

Divisors: 1 2 3 5 6 9 10 11 15 18 22 30 33 45 55 66 90 99 110 121 165 198 242 330 363 495 605 726 990 1089 1210 1815 2178 3630 5445 10890 11040517 22081034 33121551 55202585 66243102 99364653 110405170 121445687 165607755 198729306 242891374 331215510 364337061 496823265 607228435 728674122 993646530 1093011183 1214456870 1335902557 1821685305 2186022366 2671805114 3643370610 4007707671 5465055915 6679512785 8015415342 10930111830 12023123013 13359025570 20038538355 24046246026 40077076710 60115615065 120231230130