Base | Representation |
---|---|
bin | 110111111111001010… |
… | …1101111111000110110 |
3 | 102111100010021100211200 |
4 | 1233332111233320312 |
5 | 3432213143343110 |
6 | 131122232313330 |
7 | 11454304413231 |
oct | 1577625577066 |
9 | 374303240750 |
10 | 120231231030 |
11 | 46a98439449 |
12 | 1b375242846 |
13 | b451087a71 |
14 | 5b67d38418 |
15 | 31da42d6c0 |
hex | 1bfe56fe36 |
120231231030 has 48 divisors (see below), whose sum is σ = 313215467760. Its totient is φ = 31998659904.
The previous prime is 120231231023. The next prime is 120231231031. The reversal of 120231231030 is 30132132021.
120231231030 is a `hidden beast` number, since 12 + 0 + 2 + 312 + 310 + 30 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 120231230994 and 120231231012.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (120231231031) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1266472 + ... + 1358091.
It is an arithmetic number, because the mean of its divisors is an integer number (6525322245).
Almost surely, 2120231231030 is an apocalyptic number.
120231231030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
120231231030 is an abundant number, since it is smaller than the sum of its proper divisors (192984236730).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
120231231030 is a wasteful number, since it uses less digits than its factorization.
120231231030 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2625085 (or 2625082 counting only the distinct ones).
The product of its (nonzero) digits is 216, while the sum is 18.
Adding to 120231231030 its reverse (30132132021), we get a palindrome (150363363051).
Subtracting from 120231231030 its reverse (30132132021), we obtain a palindrome (90099099009).
The spelling of 120231231030 in words is "one hundred twenty billion, two hundred thirty-one million, two hundred thirty-one thousand, thirty".
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