Base | Representation |
---|---|
bin | 111101000110111111… |
… | …1101100000111110010 |
3 | 110112201201211212121102 |
4 | 1322031333230013302 |
5 | 4122230203132010 |
6 | 140141542124402 |
7 | 12324014443325 |
oct | 1721577540762 |
9 | 415651755542 |
10 | 131231302130 |
11 | 507227156a5 |
12 | 21525120702 |
13 | c4b5008886 |
14 | 64ccc267bc |
15 | 3630ed3ba5 |
hex | 1e8dfec1f2 |
131231302130 has 16 divisors (see below), whose sum is σ = 236223497664. Its totient is φ = 52490931120.
The previous prime is 131231302109. The next prime is 131231302133. The reversal of 131231302130 is 31203132131.
It is not an unprimeable number, because it can be changed into a prime (131231302133) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182885 + ... + 543975.
It is an arithmetic number, because the mean of its divisors is an integer number (14763968604).
Almost surely, 2131231302130 is an apocalyptic number.
131231302130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
131231302130 is a deficient number, since it is larger than the sum of its proper divisors (104992195534).
131231302130 is a wasteful number, since it uses less digits than its factorization.
131231302130 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 397441.
The product of its (nonzero) digits is 324, while the sum is 20.
Adding to 131231302130 its reverse (31203132131), we get a palindrome (162434434261).
The spelling of 131231302130 in words is "one hundred thirty-one billion, two hundred thirty-one million, three hundred two thousand, one hundred thirty".
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