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13113013 = 23570131
BaseRepresentation
bin110010000001…
…011010110101
3220200012200011
4302001122311
511324104023
61145020221
7216313234
oct62013265
926605604
1013113013
117447001
124484671
1329417a4
141a54b1b
15124050d
hexc816b5

13113013 has 4 divisors (see below), whose sum is σ = 13683168. Its totient is φ = 12542860.

The previous prime is 13113011. The next prime is 13113029. The reversal of 13113013 is 31031131.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31031131 = 291070039.

It is a cyclic number.

It is not a de Polignac number, because 13113013 - 21 = 13113011 is a prime.

It is a super-2 number, since 2×131130132 = 343902219876338, 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 = 13112984 and 13113002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113011) 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 3 ways as a sum of consecutive naturals, for example, 285043 + ... + 285088.

It is an arithmetic number, because the mean of its divisors is an integer number (3420792).

Almost surely, 213113013 is an apocalyptic number.

It is an amenable number.

13113013 is a deficient number, since it is larger than the sum of its proper divisors (570155).

13113013 is an equidigital number, since it uses as much as digits as its factorization.

13113013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570154.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 13113013 is about 3621.1894454723. The cubic root of 13113013 is about 235.8128663525.

Adding to 13113013 its reverse (31031131), we get a palindrome (44144144).

The spelling of 13113013 in words is "thirteen million, one hundred thirteen thousand, thirteen".

Divisors: 1 23 570131 13113013