Base | Representation |
---|---|
bin | 111001110100… |
… | …0011111010001 |
3 | 2010001000210112 |
4 | 1303220133101 |
5 | 30224444101 |
6 | 3001411105 |
7 | 515436230 |
oct | 163503721 |
9 | 63030715 |
10 | 30312401 |
11 | 16124179 |
12 | a199a95 |
13 | 6384242 |
14 | 4050b17 |
15 | 29db6bb |
hex | 1ce87d1 |
30312401 has 4 divisors (see below), whose sum is σ = 34642752. Its totient is φ = 25982052.
The previous prime is 30312383. The next prime is 30312409. The reversal of 30312401 is 10421303.
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, and also an emirpimes, since its reverse is a distinct semiprime: 10421303 = 1949 ⋅5347.
It is a cyclic number.
It is not a de Polignac number, because 30312401 - 214 = 30296017 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30312409) 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, 2165165 + ... + 2165178.
It is an arithmetic number, because the mean of its divisors is an integer number (8660688).
Almost surely, 230312401 is an apocalyptic number.
It is an amenable number.
30312401 is a deficient number, since it is larger than the sum of its proper divisors (4330351).
30312401 is an equidigital number, since it uses as much as digits as its factorization.
30312401 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4330350.
The product of its (nonzero) digits is 72, while the sum is 14.
The square root of 30312401 is about 5505.6698956621. The cubic root of 30312401 is about 311.7980866770.
Adding to 30312401 its reverse (10421303), we get a palindrome (40733704).
The spelling of 30312401 in words is "thirty million, three hundred twelve thousand, four hundred one".
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