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13030303 = 111391121
BaseRepresentation
bin110001101101…
…001110011111
3220112000012211
4301231032133
511313432203
61143141251
7215520136
oct61551637
926460184
1013030303
11739a950
124444827
132912c50
141a3291d
151225c6d
hexc6d39f

13030303 has 8 divisors (see below), whose sum is σ = 15308496. Its totient is φ = 10934400.

The previous prime is 13030291. The next prime is 13030307. The reversal of 13030303 is 30303031.

13030303 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13030303 - 29 = 13029791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

13030303 is a modest number, since divided by 30303 gives 13 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13030307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45418 + ... + 45703.

It is an arithmetic number, because the mean of its divisors is an integer number (1913562).

Almost surely, 213030303 is an apocalyptic number.

13030303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13030303 is a deficient number, since it is larger than the sum of its proper divisors (2278193).

13030303 is a wasteful number, since it uses less digits than its factorization.

13030303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91145.

The product of its (nonzero) digits is 81, while the sum is 13.

The square root of 13030303 is about 3609.7510994527. The cubic root of 13030303 is about 235.3160257040.

Adding to 13030303 its reverse (30303031), we get a palindrome (43333334).

The spelling of 13030303 in words is "thirteen million, thirty thousand, three hundred three".

Divisors: 1 11 13 143 91121 1002331 1184573 13030303