13561319 has 2 divisors, whose sum is σ = 13561320. Its totient is φ = 13561318.

The previous prime is 13561313. The next prime is 13561321. The reversal of 13561319 is 91316531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13561319 is a prime.

It is a super-2 number, since 2×13561319² = 367818746039522, which contains 22 as substring.

Together with 13561321, 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 = 13561291 and 13561300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13561313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6780659 + 6780660.

It is an arithmetic number, because the mean of its divisors is an integer number (6780660).

Almost surely, 2^13561319 is an apocalyptic number.

13561319 is a deficient number, since it is larger than the sum of its proper divisors (1).

13561319 is an equidigital number, since it uses as much as digits as its factorization.

13561319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430, while the sum is 29.

The square root of 13561319 is about 3682.5696191654. The cubic root of 13561319 is about 238.4701238751.

The spelling of 13561319 in words is "thirteen million, five hundred sixty-one thousand, three hundred nineteen".