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13011 = 34337
BaseRepresentation
bin11001011010011
3122211220
43023103
5404021
6140123
752635
oct31323
918756
1013011
119859
127643
135bcb
144a55
153cc6
hex32d3

13011 has 4 divisors (see below), whose sum is σ = 17352. Its totient is φ = 8672.

The previous prime is 13009. The next prime is 13033. The reversal of 13011 is 11031.

Adding to 13011 its reverse (11031), we get a palindrome (24042).

It can be divided in two parts, 130 and 11, that added together give a palindrome (141).

13011 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11031 = 33677.

It is a cyclic number.

It is not a de Polignac number, because 13011 - 21 = 13009 is a prime.

It is a super-2 number, since 2×130112 = 338572242, which contains 22 as substring.

It is a D-number.

13011 is a lucky number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (13001) 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, 2166 + ... + 2171.

It is an arithmetic number, because the mean of its divisors is an integer number (4338).

213011 is an apocalyptic number.

13011 is a deficient number, since it is larger than the sum of its proper divisors (4341).

13011 is an equidigital number, since it uses as much as digits as its factorization.

13011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4340.

The product of its (nonzero) digits is 3, while the sum is 6.

The square root of 13011 is about 114.0657705011. The cubic root of 13011 is about 23.5199769772.

The spelling of 13011 in words is "thirteen thousand, eleven".

Divisors: 1 3 4337 13011