Base | Representation |
---|---|
bin | 11100111101101101… |
… | …010000000010001000 |
3 | 2222021102012220020021 |
4 | 130331231100002020 |
5 | 1002143102342100 |
6 | 22142005510224 |
7 | 2150455002316 |
oct | 347555200210 |
9 | 88242186207 |
10 | 31100043400 |
11 | 1220a188a08 |
12 | 603b412374 |
13 | 2c1825c75a |
14 | 17105990b6 |
15 | c204bca1a |
hex | 73db50088 |
31100043400 has 96 divisors (see below), whose sum is σ = 75510792000. Its totient is φ = 11889785600.
The previous prime is 31100043349. The next prime is 31100043409. The reversal of 31100043400 is 434000113.
It is not an unprimeable number, because it can be changed into a prime (31100043409) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9653790 + ... + 9657010.
It is an arithmetic number, because the mean of its divisors is an integer number (786570750).
Almost surely, 231100043400 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 31100043400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37755396000).
31100043400 is an abundant number, since it is smaller than the sum of its proper divisors (44410748600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31100043400 is a wasteful number, since it uses less digits than its factorization.
31100043400 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5359 (or 5350 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 16.
Adding to 31100043400 its reverse (434000113), we get a palindrome (31534043513).
The spelling of 31100043400 in words is "thirty-one billion, one hundred million, forty-three thousand, four hundred".
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