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30146311 = 1343199271
BaseRepresentation
bin111001011111…
…1111100000111
32002201120222001
41302333330013
530204140221
62554050131
7514145056
oct162777407
962646861
1030146311
1116020408
12a119947
136326770
14400a39d
1529a7391
hex1cbff07

30146311 has 16 divisors (see below), whose sum is σ = 33510400. Its totient is φ = 26943840.

The previous prime is 30146297. The next prime is 30146323. The reversal of 30146311 is 11364103.

It is a cyclic number.

It is not a de Polignac number, because 30146311 - 25 = 30146279 is a prime.

It is a super-3 number, since 3×301463113 (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30146351) 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 15 ways as a sum of consecutive naturals, for example, 111106 + ... + 111376.

It is an arithmetic number, because the mean of its divisors is an integer number (2094400).

Almost surely, 230146311 is an apocalyptic number.

30146311 is a deficient number, since it is larger than the sum of its proper divisors (3364089).

30146311 is a wasteful number, since it uses less digits than its factorization.

30146311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 30146311 is about 5490.5656357064. The cubic root of 30146311 is about 311.2275675085.

The spelling of 30146311 in words is "thirty million, one hundred forty-six thousand, three hundred eleven".

Divisors: 1 13 43 199 271 559 2587 3523 8557 11653 53929 111241 151489 701077 2318947 30146311