Base | Representation |
---|---|
bin | 111001110100… |
… | …0011001010111 |
3 | 2010001000021112 |
4 | 1303220121113 |
5 | 30224441043 |
6 | 3001405235 |
7 | 515435150 |
oct | 163503127 |
9 | 63030245 |
10 | 30312023 |
11 | 16123965 |
12 | a19981b |
13 | 6384011 |
14 | 4050927 |
15 | 29db518 |
hex | 1ce8657 |
30312023 has 8 divisors (see below), whose sum is σ = 34700160. Its totient is φ = 25938360.
The previous prime is 30312013. The next prime is 30312053. The reversal of 30312023 is 32021303.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30312023 - 216 = 30246487 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 30311989 and 30312007.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30312013) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1328 + ... + 7898.
It is an arithmetic number, because the mean of its divisors is an integer number (4337520).
Almost surely, 230312023 is an apocalyptic number.
30312023 is a deficient number, since it is larger than the sum of its proper divisors (4388137).
30312023 is an equidigital number, since it uses as much as digits as its factorization.
30312023 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7237.
The product of its (nonzero) digits is 108, while the sum is 14.
The square root of 30312023 is about 5505.6355673074. The cubic root of 30312023 is about 311.7967906159.
Adding to 30312023 its reverse (32021303), we get a palindrome (62333326).
The spelling of 30312023 in words is "thirty million, three hundred twelve thousand, twenty-three".
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