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7230313 = 53136421
BaseRepresentation
bin11011100101001101101001
3111121100010101
4123211031221
53322332223
6414545401
7115312426
oct33451551
914540111
107230313
114099272
122508261
131661cbc
14d62d4d
1597c4ad
hex6e5369

7230313 has 4 divisors (see below), whose sum is σ = 7366788. Its totient is φ = 7093840.

The previous prime is 7230299. The next prime is 7230319. The reversal of 7230313 is 3130327.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2442969 + 4787344 = 1563^2 + 2188^2 .

It is a cyclic number.

It is not a de Polignac number, because 7230313 - 213 = 7222121 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7230319) 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, 68158 + ... + 68263.

It is an arithmetic number, because the mean of its divisors is an integer number (1841697).

Almost surely, 27230313 is an apocalyptic number.

It is an amenable number.

7230313 is a deficient number, since it is larger than the sum of its proper divisors (136475).

7230313 is a wasteful number, since it uses less digits than its factorization.

7230313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136474.

The product of its (nonzero) digits is 378, while the sum is 19.

The square root of 7230313 is about 2688.9241342961. The cubic root of 7230313 is about 193.3684871338.

It can be divided in two parts, 72303 and 13, that multiplied together give a palindrome (939939).

The spelling of 7230313 in words is "seven million, two hundred thirty thousand, three hundred thirteen".

Divisors: 1 53 136421 7230313