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630315353 = 1109356821
BaseRepresentation
bin100101100100011…
…101100101011001
31121221001100010002
4211210131211121
52242330042403
6142313502345
721422410043
oct4544354531
91557040102
10630315353
112a3884288
121571119b5
13a0781285
145d9d8a93
153a50a188
hex2591d959

630315353 has 4 divisors (see below), whose sum is σ = 630383268. Its totient is φ = 630247440.

The previous prime is 630315311. The next prime is 630315359. The reversal of 630315353 is 353513036.

630315353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 389351824 + 240963529 = 19732^2 + 15523^2 .

It is a cyclic number.

It is not a de Polignac number, because 630315353 - 212 = 630311257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630315359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17318 + ... + 39503.

It is an arithmetic number, because the mean of its divisors is an integer number (157595817).

Almost surely, 2630315353 is an apocalyptic number.

It is an amenable number.

630315353 is a deficient number, since it is larger than the sum of its proper divisors (67915).

630315353 is a wasteful number, since it uses less digits than its factorization.

630315353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67914.

The product of its (nonzero) digits is 12150, while the sum is 29.

The square root of 630315353 is about 25106.0819922185. The cubic root of 630315353 is about 857.4049014660.

Adding to 630315353 its reverse (353513036), we get a palindrome (983828389).

The spelling of 630315353 in words is "six hundred thirty million, three hundred fifteen thousand, three hundred fifty-three".

Divisors: 1 11093 56821 630315353