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30303013 = 137132831
BaseRepresentation
bin111001110011…
…0001100100101
32010000112220211
41303212030211
530224144023
63001255421
7515366656
oct163461445
963015824
1030303013
1116118114
12a194571
13637cba0
14404b52d
1529d8a0d
hex1ce6325

30303013 has 8 divisors (see below), whose sum is σ = 33094656. Its totient is φ = 27577200.

The previous prime is 30303011. The next prime is 30303017. The reversal of 30303013 is 31030303.

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 30303013 - 21 = 30303011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30302984 and 30303002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30303011) 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, 15493 + ... + 17338.

It is an arithmetic number, because the mean of its divisors is an integer number (4136832).

Almost surely, 230303013 is an apocalyptic number.

It is an amenable number.

30303013 is a deficient number, since it is larger than the sum of its proper divisors (2791643).

30303013 is a wasteful number, since it uses less digits than its factorization.

30303013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32915.

The product of its (nonzero) digits is 81, while the sum is 13.

The square root of 30303013 is about 5504.8172540058. The cubic root of 30303013 is about 311.7658945424.

Adding to 30303013 its reverse (31030303), we get a palindrome (61333316).

The spelling of 30303013 in words is "thirty million, three hundred three thousand, thirteen".

Divisors: 1 13 71 923 32831 426803 2331001 30303013