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30163313 = 163185051
BaseRepresentation
bin111001100010…
…0000101110001
32002202110021202
41303010011301
530210211223
62554300545
7514245455
oct163040561
962673252
1030163313
1116032164
12a127755
13633141b
144012665
1529ac428
hex1cc4171

30163313 has 4 divisors (see below), whose sum is σ = 30348528. Its totient is φ = 29978100.

The previous prime is 30163303. The next prime is 30163351. The reversal of 30163313 is 31336103.

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: 31336103 = 37384011.

It is a cyclic number.

It is not a de Polignac number, because 30163313 - 24 = 30163297 is a prime.

It is a super-2 number, since 2×301633132 = 1819650902271938, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30163303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92363 + ... + 92688.

It is an arithmetic number, because the mean of its divisors is an integer number (7587132).

Almost surely, 230163313 is an apocalyptic number.

It is an amenable number.

30163313 is a deficient number, since it is larger than the sum of its proper divisors (185215).

30163313 is a wasteful number, since it uses less digits than its factorization.

30163313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185214.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 30163313 is about 5492.1137096750. The cubic root of 30163313 is about 311.2860655079.

Adding to 30163313 its reverse (31336103), we get a palindrome (61499416).

The spelling of 30163313 in words is "thirty million, one hundred sixty-three thousand, three hundred thirteen".

Divisors: 1 163 185051 30163313