Base | Representation |
---|---|
bin | 111011111001… |
… | …0010010001100 |
3 | 2012002100012201 |
4 | 1313302102030 |
5 | 31014313400 |
6 | 3041011244 |
7 | 530622253 |
oct | 167622214 |
9 | 65070181 |
10 | 31401100 |
11 | 167a8125 |
12 | a623b24 |
13 | 6675943 |
14 | 425579a |
15 | 2b5406a |
hex | 1df248c |
31401100 has 36 divisors (see below), whose sum is σ = 68535544. Its totient is φ = 12487680.
The previous prime is 31401079. The next prime is 31401101. The reversal of 31401100 is 110413.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is not an unprimeable number, because it can be changed into a prime (31401101) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18487 + ... + 20113.
Almost surely, 231401100 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 31401100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34267772).
31401100 is an abundant number, since it is smaller than the sum of its proper divisors (37134444).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31401100 is a wasteful number, since it uses less digits than its factorization.
31401100 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1834 (or 1827 counting only the distinct ones).
The product of its (nonzero) digits is 12, while the sum is 10.
The square root of 31401100 is about 5603.6684412981. The cubic root of 31401100 is about 315.4871106337.
Adding to 31401100 its reverse (110413), we get a palindrome (31511513).
The spelling of 31401100 in words is "thirty-one million, four hundred one thousand, one hundred".
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