13103213 has 4 divisors (see below), whose sum is σ = 13112508. Its totient is φ = 13093920.

The previous prime is 13103201. The next prime is 13103219. The reversal of 13103213 is 31230131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31230131 = 71 ⋅439861.

It can be written as a sum of positive squares in 2 ways, for example, as 4418404 + 8684809 = 2102^2 + 2947^2 .

It is a cyclic number.

It is not a de Polignac number, because 13103213 - 2⁴ = 13103197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13103219) 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, 2048 + ... + 5513.

It is an arithmetic number, because the mean of its divisors is an integer number (3278127).

Almost surely, 2^13103213 is an apocalyptic number.

It is an amenable number.

13103213 is a deficient number, since it is larger than the sum of its proper divisors (9295).

13103213 is an equidigital number, since it uses as much as digits as its factorization.

13103213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9294.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 13103213 is about 3619.8360460109. The cubic root of 13103213 is about 235.7541068584.

Adding to 13103213 its reverse (31230131), we get a palindrome (44333344).

The spelling of 13103213 in words is "thirteen million, one hundred three thousand, two hundred thirteen".