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318028033 = 2251141283
BaseRepresentation
bin10010111101001…
…011100100000001
3211011102111110001
4102331023210001
51122403344113
651320240001
710611123301
oct2275134401
9734374401
10318028033
11153578194
128a610001
1350b7078b
1430347601
151cdc07dd
hex12f4b901

318028033 has 4 divisors (see below), whose sum is σ = 318171568. Its totient is φ = 317884500.

The previous prime is 318028001. The next prime is 318028049. The reversal of 318028033 is 330820813.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 318028033 - 25 = 318028001 is a prime.

It is a super-2 number, since 2×3180280332 = 202283659547698178, 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 = 318027992 and 318028010.

It is not an unprimeable number, because it can be changed into a prime (318028933) 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 3 ways as a sum of consecutive naturals, for example, 68391 + ... + 72892.

It is an arithmetic number, because the mean of its divisors is an integer number (79542892).

Almost surely, 2318028033 is an apocalyptic number.

It is an amenable number.

318028033 is a deficient number, since it is larger than the sum of its proper divisors (143535).

318028033 is a wasteful number, since it uses less digits than its factorization.

318028033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143534.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 318028033 is about 17833.3404890951. The cubic root of 318028033 is about 682.5824759556.

Adding to 318028033 its reverse (330820813), we get a palindrome (648848846).

It can be divided in two parts, 3180 and 28033, that added together give a palindrome (31213).

The spelling of 318028033 in words is "three hundred eighteen million, twenty-eight thousand, thirty-three".

Divisors: 1 2251 141283 318028033