13019 has 4 divisors (see below), whose sum is σ = 13344. Its totient is φ = 12696.
The previous prime is 13009. The next prime is 13033. The reversal of 13019 is 91031.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 13019 - 24 = 13003 is a prime.
It is a super-2 number, since 2×130192 = 338988722, which contains 22 as substring.
It is a Duffinian number.
It is a plaindrome in base 15.
It is a nialpdrome in base 11.
It is a junction number, because it is equal to n+sod(n) for n = 12994 and 13012.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13009) 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, 92 + ... + 185.
It is an arithmetic number, because the mean of its divisors is an integer number (3336).
213019 is an apocalyptic number.
13019 is a deficient number, since it is larger than the sum of its proper divisors (325).
13019 is an equidigital number, since it uses as much as digits as its factorization.
13019 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 324.
The product of its (nonzero) digits is 27, while the sum is 14.
The square root of 13019 is about 114.1008325999. The cubic root of 13019 is about 23.5247965213.
The spelling of 13019 in words is "thirteen thousand, nineteen".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.075 sec. • engine limits •