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304031 = 7132257
BaseRepresentation
bin1001010001110011111
3120110001102
41022032133
534212111
610303315
72404250
oct1121637
9513042
10304031
11198472
12127b3b
13a8500
147cb27
156013b
hex4a39f

304031 has 12 divisors (see below), whose sum is σ = 377712. Its totient is φ = 239616.

The previous prime is 304021. The next prime is 304033. The reversal of 304031 is 130403.

It is not a de Polignac number, because 304031 - 210 = 303007 is a prime.

It is a super-2 number, since 2×3040312 = 184869697922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 304031.

It is not an unprimeable number, because it can be changed into a prime (304033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1055 + ... + 1311.

It is an arithmetic number, because the mean of its divisors is an integer number (31476).

2304031 is an apocalyptic number.

304031 is a deficient number, since it is larger than the sum of its proper divisors (73681).

304031 is a wasteful number, since it uses less digits than its factorization.

304031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 304031 is about 551.3900615717. The cubic root of 304031 is about 67.2417936118.

Adding to 304031 its reverse (130403), we get a palindrome (434434).

The spelling of 304031 in words is "three hundred four thousand, thirty-one".

Divisors: 1 7 13 91 169 257 1183 1799 3341 23387 43433 304031