Base | Representation |
---|---|
bin | 1011011001011010000110… |
… | …1000010100010100100000 |
3 | 1122100222001002022212122121 |
4 | 2312112201220110110200 |
5 | 3120302224103200300 |
6 | 42352420001114024 |
7 | 2432226054420646 |
oct | 266264150242440 |
9 | 48328032285577 |
10 | 12531131303200 |
11 | 3aa1471a31154 |
12 | 14a474a628914 |
13 | 6cb8b03c3613 |
14 | 31471d5b7196 |
15 | 16ae6bb4881a |
hex | b65a1a14520 |
12531131303200 has 72 divisors (see below), whose sum is σ = 30726389603952. Its totient is φ = 4990371160320.
The previous prime is 12531131303191. The next prime is 12531131303269. The reversal of 12531131303200 is 230313113521.
It is a Harshad number since it is a multiple of its sum of digits (25).
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 11 ways as a sum of consecutive naturals, for example, 34320414 + ... + 34683613.
It is an arithmetic number, because the mean of its divisors is an integer number (426755411166).
Almost surely, 212531131303200 is an apocalyptic number.
12531131303200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12531131303200 is an abundant number, since it is smaller than the sum of its proper divisors (18195258300752).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12531131303200 is a wasteful number, since it uses less digits than its factorization.
12531131303200 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 69004274 (or 69004261 counting only the distinct ones).
The product of its (nonzero) digits is 1620, while the sum is 25.
Adding to 12531131303200 its reverse (230313113521), we get a palindrome (12761444416721).
The spelling of 12531131303200 in words is "twelve trillion, five hundred thirty-one billion, one hundred thirty-one million, three hundred three thousand, two hundred".
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