Base | Representation |
---|---|
bin | 11100111101010011… |
… | …010110100000100100 |
3 | 2222020221102222011200 |
4 | 130331103112200210 |
5 | 1002134333113210 |
6 | 22141204202500 |
7 | 2150343204552 |
oct | 347523264044 |
9 | 88227388150 |
10 | 31093254180 |
11 | 1220637108a |
12 | 6039099430 |
13 | 2c16a23471 |
14 | 170d70cbd2 |
15 | c1eacb0c0 |
hex | 73d4d6824 |
31093254180 has 72 divisors (see below), whose sum is σ = 94338716472. Its totient is φ = 8289555456.
The previous prime is 31093254161. The next prime is 31093254209. The reversal of 31093254180 is 8145239013.
31093254180 is a `hidden beast` number, since 3 + 1 + 0 + 9 + 32 + 541 + 80 = 666.
It can be written as a sum of positive squares in 4 ways, for example, as 7632817956 + 23460436224 = 87366^2 + 153168^2 .
It is a Harshad number since it is a multiple of its sum of digits (36).
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, 833692 + ... + 870188.
It is an arithmetic number, because the mean of its divisors is an integer number (1310259951).
Almost surely, 231093254180 is an apocalyptic number.
31093254180 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is an amenable number.
31093254180 is an abundant number, since it is smaller than the sum of its proper divisors (63245462292).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31093254180 is a wasteful number, since it uses less digits than its factorization.
31093254180 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 41245 (or 41240 counting only the distinct ones).
The product of its (nonzero) digits is 25920, while the sum is 36.
The spelling of 31093254180 in words is "thirty-one billion, ninety-three million, two hundred fifty-four thousand, one hundred eighty".
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