Search a number
-
+
13103071 = 22515821
BaseRepresentation
bin110001111110…
…111111011111
3220122201000221
4301332333133
511323244241
61144502211
7216242242
oct61767737
926581027
1013103071
11743a593
12447a967
13293a0c7
141a51259
15123c5d1
hexc7efdf

13103071 has 4 divisors (see below), whose sum is σ = 13111144. Its totient is φ = 13095000.

The previous prime is 13103053. The next prime is 13103087. The reversal of 13103071 is 17030131.

It is a happy number.

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 is a cyclic number.

It is not a de Polignac number, because 13103071 - 29 = 13102559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13103011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660 + ... + 5161.

It is an arithmetic number, because the mean of its divisors is an integer number (3277786).

Almost surely, 213103071 is an apocalyptic number.

13103071 is a deficient number, since it is larger than the sum of its proper divisors (8073).

13103071 is an equidigital number, since it uses as much as digits as its factorization.

13103071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8072.

The product of its (nonzero) digits is 63, while the sum is 16.

The square root of 13103071 is about 3619.8164318098. The cubic root of 13103071 is about 235.7532552300.

The spelling of 13103071 in words is "thirteen million, one hundred three thousand, seventy-one".

Divisors: 1 2251 5821 13103071