Base | Representation |
---|---|
bin | 100101101000010… |
… | …100010101011010 |
3 | 1121222221200112000 |
4 | 211220110111122 |
5 | 2243104413132 |
6 | 142351301430 |
7 | 21434116464 |
oct | 4550242532 |
9 | 1558850460 |
10 | 631326042 |
11 | 2a4404666 |
12 | 15751a876 |
13 | a0a46309 |
14 | 5dbbd134 |
15 | 3a65987c |
hex | 25a1455a |
631326042 has 64 divisors (see below), whose sum is σ = 1525703040. Its totient is φ = 192699648.
The previous prime is 631326029. The next prime is 631326071. The reversal of 631326042 is 240623136.
631326042 is a `hidden beast` number, since 631 + 3 + 26 + 0 + 4 + 2 = 666.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a junction number, because it is equal to n+sod(n) for n = 631325997 and 631326015.
It is an unprimeable number.
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 31 ways as a sum of consecutive naturals, for example, 24673 + ... + 43259.
It is an arithmetic number, because the mean of its divisors is an integer number (23839110).
Almost surely, 2631326042 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 631326042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762851520).
631326042 is an abundant number, since it is smaller than the sum of its proper divisors (894376998).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
631326042 is a wasteful number, since it uses less digits than its factorization.
631326042 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 18652 (or 18646 counting only the distinct ones).
The product of its (nonzero) digits is 5184, while the sum is 27.
The square root of 631326042 is about 25126.2022995916. The cubic root of 631326042 is about 857.8629298370.
Adding to 631326042 its reverse (240623136), we get a palindrome (871949178).
The spelling of 631326042 in words is "six hundred thirty-one million, three hundred twenty-six thousand, forty-two".
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