Base | Representation |
---|---|
bin | 1011101001001010110… |
… | …1111001011110000111 |
3 | 201010022102201220011201 |
4 | 2322102231321132013 |
5 | 11234130140013111 |
6 | 231520441043331 |
7 | 20310633645400 |
oct | 2722255713607 |
9 | 633272656151 |
10 | 200030001031 |
11 | 779177a2443 |
12 | 32925786547 |
13 | 15b2a5c4773 |
14 | 99780909a7 |
15 | 530aded6c1 |
hex | 2e92b79787 |
200030001031 has 12 divisors (see below), whose sum is σ = 232739170608. Its totient is φ = 171416552832.
The previous prime is 200030001007. The next prime is 200030001053. The reversal of 200030001031 is 130100030002.
It is a de Polignac number, because none of the positive numbers 2k-200030001031 is a prime.
It is a super-2 number, since 2×2000300010312 (a number of 23 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 200030000999 and 200030001017.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (200030001091) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223146 + ... + 670711.
It is an arithmetic number, because the mean of its divisors is an integer number (19394930884).
Almost surely, 2200030001031 is an apocalyptic number.
200030001031 is a deficient number, since it is larger than the sum of its proper divisors (32709169577).
200030001031 is an equidigital number, since it uses as much as digits as its factorization.
200030001031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 898438 (or 898431 counting only the distinct ones).
The product of its (nonzero) digits is 18, while the sum is 10.
Adding to 200030001031 its reverse (130100030002), we get a palindrome (330130031033).
The spelling of 200030001031 in words is "two hundred billion, thirty million, one thousand, thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •