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30383121 = 319950893
BaseRepresentation
bin111001111100…
…1110000010001
32010011121210210
41303321300101
530234224441
63003114333
7516152346
oct163716021
963147723
1030383121
111617231a
12a2129a9
1363aa4a2
14406c7cd
152a02616
hex1cf9c11

30383121 has 8 divisors (see below), whose sum is σ = 40715200. Its totient is φ = 20153232.

The previous prime is 30383057. The next prime is 30383137. The reversal of 30383121 is 12138303.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30383121 - 26 = 30383057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30383021) 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, 24850 + ... + 26043.

It is an arithmetic number, because the mean of its divisors is an integer number (5089400).

Almost surely, 230383121 is an apocalyptic number.

It is an amenable number.

30383121 is a deficient number, since it is larger than the sum of its proper divisors (10332079).

30383121 is a wasteful number, since it uses less digits than its factorization.

30383121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51095.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 30383121 is about 5512.0886241061. The cubic root of 30383121 is about 312.0403773352.

The spelling of 30383121 in words is "thirty million, three hundred eighty-three thousand, one hundred twenty-one".

Divisors: 1 3 199 597 50893 152679 10127707 30383121