Base | Representation |
---|---|
bin | 111100100001111… |
… | …0001001011011001 |
3 | 12020112202001202102 |
4 | 1321003301023121 |
5 | 13124420443001 |
6 | 533312013145 |
7 | 101221323116 |
oct | 17103611331 |
9 | 5215661672 |
10 | 2031031001 |
11 | 95251171a |
12 | 4882311b5 |
13 | 264a206bc |
14 | 153a5590d |
15 | bd491e6b |
hex | 790f12d9 |
2031031001 has 2 divisors, whose sum is σ = 2031031002. Its totient is φ = 2031031000.
The previous prime is 2031030949. The next prime is 2031031003. The reversal of 2031031001 is 1001301302.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 1887989401 + 143041600 = 43451^2 + 11960^2 .
It is a cyclic number.
It is not a de Polignac number, because 2031031001 - 222 = 2026836697 is a prime.
Together with 2031031003, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (2031031003) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015515500 + 1015515501.
It is an arithmetic number, because the mean of its divisors is an integer number (1015515501).
Almost surely, 22031031001 is an apocalyptic number.
It is an amenable number.
2031031001 is a deficient number, since it is larger than the sum of its proper divisors (1).
2031031001 is an equidigital number, since it uses as much as digits as its factorization.
2031031001 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 18, while the sum is 11.
The square root of 2031031001 is about 45066.9613020448. The cubic root of 2031031001 is about 1266.4037391094.
Adding to 2031031001 its reverse (1001301302), we get a palindrome (3032332303).
The spelling of 2031031001 in words is "two billion, thirty-one million, thirty-one thousand, one".
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