Base | Representation |
---|---|
bin | 11101001110101110… |
… | …000001011001111101 |
3 | 10000000022021110212112 |
4 | 131032232001121331 |
5 | 1003234134131201 |
6 | 22230203143405 |
7 | 2160521664611 |
oct | 351656013175 |
9 | 100008243775 |
10 | 31385458301 |
11 | 1234630039a |
12 | 60bab14b65 |
13 | 2c62421a02 |
14 | 173a453341 |
15 | c3a59a0bb |
hex | 74eb8167d |
31385458301 has 2 divisors, whose sum is σ = 31385458302. Its totient is φ = 31385458300.
The previous prime is 31385458283. The next prime is 31385458331. The reversal of 31385458301 is 10385458313.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 18455494201 + 12929964100 = 135851^2 + 113710^2 .
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-31385458301 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (31385458331) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15692729150 + 15692729151.
It is an arithmetic number, because the mean of its divisors is an integer number (15692729151).
Almost surely, 231385458301 is an apocalyptic number.
It is an amenable number.
31385458301 is a deficient number, since it is larger than the sum of its proper divisors (1).
31385458301 is an equidigital number, since it uses as much as digits as its factorization.
31385458301 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 172800, while the sum is 41.
The spelling of 31385458301 in words is "thirty-one billion, three hundred eighty-five million, four hundred fifty-eight thousand, three hundred one".
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