13780313 has 2 divisors, whose sum is σ = 13780314. Its totient is φ = 13780312.

The previous prime is 13780303. The next prime is 13780331. The reversal of 13780313 is 31308731.

Together with next prime (13780331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13778944 + 1369 = 3712^2 + 37^2 .

It is a cyclic number.

It is not a de Polignac number, because 13780313 - 2⁴ = 13780297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13780303) 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, 6890156 + 6890157.

It is an arithmetic number, because the mean of its divisors is an integer number (6890157).

Almost surely, 2^13780313 is an apocalyptic number.

It is an amenable number.

13780313 is a deficient number, since it is larger than the sum of its proper divisors (1).

13780313 is an equidigital number, since it uses as much as digits as its factorization.

13780313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 13780313 is about 3712.1843973596. The cubic root of 13780313 is about 239.7469149232.

The spelling of 13780313 in words is "thirteen million, seven hundred eighty thousand, three hundred thirteen".