13020113 has 4 divisors (see below), whose sum is σ = 13786020. Its totient is φ = 12254208.

The previous prime is 13020109. The next prime is 13020121. The reversal of 13020113 is 31102031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9048064 + 3972049 = 3008^2 + 1993^2 .

It is a cyclic number.

It is not a de Polignac number, because 13020113 - 2² = 13020109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13020094 and 13020103.

It is not an unprimeable number, because it can be changed into a prime (13020103) 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, 382928 + ... + 382961.

It is an arithmetic number, because the mean of its divisors is an integer number (3446505).

Almost surely, 2^13020113 is an apocalyptic number.

It is an amenable number.

13020113 is a deficient number, since it is larger than the sum of its proper divisors (765907).

13020113 is an equidigital number, since it uses as much as digits as its factorization.

13020113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765906.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 13020113 is about 3608.3393687401. The cubic root of 13020113 is about 235.2546688387.

Adding to 13020113 its reverse (31102031), we get a palindrome (44122144).

The spelling of 13020113 in words is "thirteen million, twenty thousand, one hundred thirteen".