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30524131 = 1141531277
BaseRepresentation
bin111010001110…
…0001011100011
32010102210020101
41310130023203
530303233011
63010123231
7520310431
oct164341343
963383211
1030524131
1116259260
12a280517
136429721
1440a7d51
152a2e2c1
hex1d1c2e3

30524131 has 16 divisors (see below), whose sum is σ = 34782048. Its totient is φ = 26540800.

The previous prime is 30524113. The next prime is 30524141. The reversal of 30524131 is 13142503.

It is a de Polignac number, because none of the positive numbers 2k-30524131 is a prime.

It is a super-2 number, since 2×305241312 = 1863445146610322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30524099 and 30524108.

It is not an unprimeable number, because it can be changed into a prime (30524101) 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 15 ways as a sum of consecutive naturals, for example, 23265 + ... + 24541.

It is an arithmetic number, because the mean of its divisors is an integer number (2173878).

Almost surely, 230524131 is an apocalyptic number.

30524131 is a deficient number, since it is larger than the sum of its proper divisors (4257917).

30524131 is a wasteful number, since it uses less digits than its factorization.

30524131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 30524131 is about 5524.8647947257. The cubic root of 30524131 is about 312.5223655459.

Adding to 30524131 its reverse (13142503), we get a palindrome (43666634).

The spelling of 30524131 in words is "thirty million, five hundred twenty-four thousand, one hundred thirty-one".

Divisors: 1 11 41 53 451 583 1277 2173 14047 23903 52357 67681 575927 744491 2774921 30524131