Base | Representation |
---|---|
bin | 111001111001… |
… | …0100000010111 |
3 | 2010010010002011 |
4 | 1303302200113 |
5 | 30232302211 |
6 | 3002325051 |
7 | 515666653 |
oct | 163624027 |
9 | 63103064 |
10 | 30353431 |
11 | 16151a89 |
12 | a1b9787 |
13 | 6399b14 |
14 | 4061a63 |
15 | 29e8921 |
hex | 1cf2817 |
30353431 has 8 divisors (see below), whose sum is σ = 32815280. Its totient is φ = 27978048.
The previous prime is 30353413. The next prime is 30353437. The reversal of 30353431 is 13435303.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30353431 - 215 = 30320663 is a prime.
It is a super-2 number, since 2×303534312 = 1842661546943522, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30353437) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20886 + ... + 22291.
It is an arithmetic number, because the mean of its divisors is an integer number (4101910).
Almost surely, 230353431 is an apocalyptic number.
30353431 is a deficient number, since it is larger than the sum of its proper divisors (2461849).
30353431 is a wasteful number, since it uses less digits than its factorization.
30353431 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 43233.
The product of its (nonzero) digits is 1620, while the sum is 22.
The square root of 30353431 is about 5509.3947943490. The cubic root of 30353431 is about 311.9387035785.
Adding to 30353431 its reverse (13435303), we get a palindrome (43788734).
The spelling of 30353431 in words is "thirty million, three hundred fifty-three thousand, four hundred thirty-one".
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