Base | Representation |
---|---|
bin | 10010111010100100… |
… | …100111100001000001 |
3 | 1221102102220110000012 |
4 | 102322210213201001 |
5 | 313043331433101 |
6 | 13155202234305 |
7 | 1316205260423 |
oct | 227244474101 |
9 | 57372813005 |
10 | 20310030401 |
11 | 86825344a1 |
12 | 3b29955995 |
13 | 1bb89a808b |
14 | da954a813 |
15 | 7dd0abbbb |
hex | 4ba927841 |
20310030401 has 4 divisors (see below), whose sum is σ = 20965192704. Its totient is φ = 19654868100.
The previous prime is 20310030379. The next prime is 20310030431. The reversal of 20310030401 is 10403001302.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 20310030401 - 214 = 20310014017 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (20310030431) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327581105 + ... + 327581166.
It is an arithmetic number, because the mean of its divisors is an integer number (5241298176).
Almost surely, 220310030401 is an apocalyptic number.
It is an amenable number.
20310030401 is a deficient number, since it is larger than the sum of its proper divisors (655162303).
20310030401 is an equidigital number, since it uses as much as digits as its factorization.
20310030401 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 655162302.
The product of its (nonzero) digits is 72, while the sum is 14.
Adding to 20310030401 its reverse (10403001302), we get a palindrome (30713031703).
The spelling of 20310030401 in words is "twenty billion, three hundred ten million, thirty thousand, four hundred one".
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