Base | Representation |
---|---|
bin | 10001111010110000100… |
… | …001011110101010001000 |
3 | 11100201020221222101121102 |
4 | 101322300201132222020 |
5 | 130133221441304000 |
6 | 2341354524200532 |
7 | 154650212056205 |
oct | 21726041365210 |
9 | 4321227871542 |
10 | 1231322213000 |
11 | 43522331a340 |
12 | 17a77b399148 |
13 | 8c161894559 |
14 | 4384c3d6cac |
15 | 220699413d5 |
hex | 11eb085ea88 |
1231322213000 has 128 divisors (see below), whose sum is σ = 3152297865600. Its totient is φ = 446461792000.
The previous prime is 1231322212963. The next prime is 1231322213027. The reversal of 1231322213000 is 3122231321.
It is a Harshad number since it is a multiple of its sum of digits (20).
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3655706 + ... + 3978294.
It is an arithmetic number, because the mean of its divisors is an integer number (24627327075).
Almost surely, 21231322213000 is an apocalyptic number.
1231322213000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1231322213000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1576148932800).
1231322213000 is an abundant number, since it is smaller than the sum of its proper divisors (1920975652600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1231322213000 is a wasteful number, since it uses less digits than its factorization.
1231322213000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 322968 (or 322954 counting only the distinct ones).
The product of its (nonzero) digits is 432, while the sum is 20.
Adding to 1231322213000 its reverse (3122231321), we get a palindrome (1234444444321).
The spelling of 1231322213000 in words is "one trillion, two hundred thirty-one billion, three hundred twenty-two million, two hundred thirteen thousand".
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