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30310055 = 543140977
BaseRepresentation
bin111001110011…
…1111010100111
32010000220120122
41303213322213
530224410210
63001352155
7515426336
oct163477247
963026518
1030310055
1116122436
12a19865b
136383159
14404dd1d
1529dab55
hex1ce7ea7

30310055 has 8 divisors (see below), whose sum is σ = 37218192. Its totient is φ = 23683968.

The previous prime is 30310051. The next prime is 30310057. The reversal of 30310055 is 55001303.

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 30310055 - 22 = 30310051 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 (30310051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70274 + ... + 70703.

It is an arithmetic number, because the mean of its divisors is an integer number (4652274).

Almost surely, 230310055 is an apocalyptic number.

30310055 is a deficient number, since it is larger than the sum of its proper divisors (6908137).

30310055 is a wasteful number, since it uses less digits than its factorization.

30310055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141025.

The product of its (nonzero) digits is 225, while the sum is 17.

The square root of 30310055 is about 5505.4568384467. The cubic root of 30310055 is about 311.7900426955.

Adding to 30310055 its reverse (55001303), we get a palindrome (85311358).

The spelling of 30310055 in words is "thirty million, three hundred ten thousand, fifty-five".

Divisors: 1 5 43 215 140977 704885 6062011 30310055