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30223013 = 43170123
BaseRepresentation
bin111001101001…
…0101010100101
32002212111011212
41303102222211
530214114023
62555441205
7514614512
oct163225245
962774155
1030223013
1116072aa7
12a156205
136352652
14402a309
1529bee78
hex1cd2aa5

30223013 has 4 divisors (see below), whose sum is σ = 30293568. Its totient is φ = 30152460.

The previous prime is 30223009. The next prime is 30223019. The reversal of 30223013 is 31032203.

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 30223013 - 22 = 30223009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30223019) 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 3 ways as a sum of consecutive naturals, for example, 34631 + ... + 35492.

It is an arithmetic number, because the mean of its divisors is an integer number (7573392).

Almost surely, 230223013 is an apocalyptic number.

It is an amenable number.

30223013 is a deficient number, since it is larger than the sum of its proper divisors (70555).

30223013 is an equidigital number, since it uses as much as digits as its factorization.

30223013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70554.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 30223013 is about 5497.5460889382. The cubic root of 30223013 is about 311.4912986120.

Adding to 30223013 its reverse (31032203), we get a palindrome (61255216).

The spelling of 30223013 in words is "thirty million, two hundred twenty-three thousand, thirteen".

Divisors: 1 431 70123 30223013