Base | Representation |
---|---|
bin | 11100111000111111… |
… | …110110011010010000 |
3 | 2222001220112202111000 |
4 | 130320333312122100 |
5 | 1002012341024404 |
6 | 22130104222000 |
7 | 2145505300515 |
oct | 347077663220 |
9 | 88056482430 |
10 | 31021033104 |
11 | 12179623346 |
12 | 6018a6a900 |
13 | 2c04a879b9 |
14 | 1703cad30c |
15 | c185b2339 |
hex | 738ff6690 |
31021033104 has 80 divisors (see below), whose sum is σ = 89062871040. Its totient is φ = 10337904000.
The previous prime is 31021033093. The next prime is 31021033111. The reversal of 31021033104 is 40133012013.
31021033104 is a `hidden beast` number, since 310 + 21 + 0 + 331 + 0 + 4 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3644854 + ... + 3653354.
It is an arithmetic number, because the mean of its divisors is an integer number (1113285888).
Almost surely, 231021033104 is an apocalyptic number.
It is an amenable number.
31021033104 is an abundant number, since it is smaller than the sum of its proper divisors (58041837936).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31021033104 is a wasteful number, since it uses less digits than its factorization.
31021033104 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16965 (or 16953 counting only the distinct ones).
The product of its (nonzero) digits is 216, while the sum is 18.
Adding to 31021033104 its reverse (40133012013), we get a palindrome (71154045117).
The spelling of 31021033104 in words is "thirty-one billion, twenty-one million, thirty-three thousand, one hundred four".
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