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30131174 = 2172930559
BaseRepresentation
bin111001011110…
…0001111100110
32002200211012102
41302330033212
530203144144
62553452102
7514052663
oct162741746
962624172
1030131174
111600aaa7
12a111032
13631c8c8
144004a6a
1529a2b4e
hex1cbc3e6

30131174 has 16 divisors (see below), whose sum is σ = 49507200. Its totient is φ = 13689984.

The previous prime is 30131159. The next prime is 30131201. The reversal of 30131174 is 47113103.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14294 + ... + 16265.

It is an arithmetic number, because the mean of its divisors is an integer number (3094200).

Almost surely, 230131174 is an apocalyptic number.

30131174 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

30131174 is a deficient number, since it is larger than the sum of its proper divisors (19376026).

30131174 is a wasteful number, since it uses less digits than its factorization.

30131174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30607.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 30131174 is about 5489.1870071988. The cubic root of 30131174 is about 311.1754678181.

Adding to 30131174 its reverse (47113103), we get a palindrome (77244277).

The spelling of 30131174 in words is "thirty million, one hundred thirty-one thousand, one hundred seventy-four".

Divisors: 1 2 17 29 34 58 493 986 30559 61118 519503 886211 1039006 1772422 15065587 30131174