13190321 has 2 divisors, whose sum is σ = 13190322. Its totient is φ = 13190320.

The previous prime is 13190311. The next prime is 13190323. The reversal of 13190321 is 12309131.

13190321 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9333025 + 3857296 = 3055^2 + 1964^2 .

It is a cyclic number.

It is not a de Polignac number, because 13190321 - 2⁶ = 13190257 is a prime.

Together with 13190323, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13190293 and 13190302.

It is not a weakly prime, because it can be changed into another prime (13190323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6595160 + 6595161.

It is an arithmetic number, because the mean of its divisors is an integer number (6595161).

Almost surely, 2^13190321 is an apocalyptic number.

It is an amenable number.

13190321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13190321 is an equidigital number, since it uses as much as digits as its factorization.

13190321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 13190321 is about 3631.8481521121. The cubic root of 13190321 is about 236.2753716115.

Adding to 13190321 its reverse (12309131), we get a palindrome (25499452).

The spelling of 13190321 in words is "thirteen million, one hundred ninety thousand, three hundred twenty-one".