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30145323 = 3132632939
BaseRepresentation
bin111001011111…
…1101100101011
32002201112121110
41302333230223
530204122243
62554041403
7514142145
oct162775453
962645543
1030145323
111601a69a
12a119263
136326190
144009c95
1529a6e33
hex1cbfb2b

30145323 has 16 divisors (see below), whose sum is σ = 43464960. Its totient is φ = 18474144.

The previous prime is 30145321. The next prime is 30145333. The reversal of 30145323 is 32354103.

It is not a de Polignac number, because 30145323 - 21 = 30145321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30145323.

It is not an unprimeable number, because it can be changed into a prime (30145321) 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, 8788 + ... + 11726.

It is an arithmetic number, because the mean of its divisors is an integer number (2716560).

Almost surely, 230145323 is an apocalyptic number.

30145323 is a deficient number, since it is larger than the sum of its proper divisors (13319637).

30145323 is a wasteful number, since it uses less digits than its factorization.

30145323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3218.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 30145323 is about 5490.4756624540. The cubic root of 30145323 is about 311.2241674662.

Adding to 30145323 its reverse (32354103), we get a palindrome (62499426).

It can be divided in two parts, 301453 and 23, that added together give a triangular number (301476 = T776).

The spelling of 30145323 in words is "thirty million, one hundred forty-five thousand, three hundred twenty-three".

Divisors: 1 3 13 39 263 789 2939 3419 8817 10257 38207 114621 772957 2318871 10048441 30145323