13012819 has 4 divisors (see below), whose sum is σ = 13023000. Its totient is φ = 13002640.

The previous prime is 13012799. The next prime is 13012849. The reversal of 13012819 is 91821031.

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 13012819 - 2⁵ = 13012787 is a prime.

It is a super-2 number, since 2×13012819² = 338666916653522, 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 = 13012793 and 13012802.

It is not an unprimeable number, because it can be changed into a prime (13012849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2842 + ... + 5839.

It is an arithmetic number, because the mean of its divisors is an integer number (3255750).

Almost surely, 2^13012819 is an apocalyptic number.

13012819 is a deficient number, since it is larger than the sum of its proper divisors (10181).

13012819 is an equidigital number, since it uses as much as digits as its factorization.

13012819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10180.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 13012819 is about 3607.3285129026. The cubic root of 13012819 is about 235.2107299450.

It can be divided in two parts, 13012 and 819, that added together give a palindrome (13831).

The spelling of 13012819 in words is "thirteen million, twelve thousand, eight hundred nineteen".