13215113 has 2 divisors, whose sum is σ = 13215114. Its totient is φ = 13215112.

The previous prime is 13215109. The next prime is 13215121. The reversal of 13215113 is 31151231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7246864 + 5968249 = 2692^2 + 2443^2 .

It is a cyclic number.

It is not a de Polignac number, because 13215113 - 2² = 13215109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13215091 and 13215100.

It is not a weakly prime, because it can be changed into another prime (13215193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6607556 + 6607557.

It is an arithmetic number, because the mean of its divisors is an integer number (6607557).

Almost surely, 2^13215113 is an apocalyptic number.

It is an amenable number.

13215113 is a deficient number, since it is larger than the sum of its proper divisors (1).

13215113 is an equidigital number, since it uses as much as digits as its factorization.

13215113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90, while the sum is 17.

The square root of 13215113 is about 3635.2596881103. The cubic root of 13215113 is about 236.4233102110.

Adding to 13215113 its reverse (31151231), we get a palindrome (44366344).

The spelling of 13215113 in words is "thirteen million, two hundred fifteen thousand, one hundred thirteen".