13078313 has 2 divisors, whose sum is σ = 13078314. Its totient is φ = 13078312.

The previous prime is 13078309. The next prime is 13078337. The reversal of 13078313 is 31387031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8596624 + 4481689 = 2932^2 + 2117^2 .

It is a cyclic number.

It is not a de Polignac number, because 13078313 - 2² = 13078309 is a prime.

It is not a weakly prime, because it can be changed into another prime (13078363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6539156 + 6539157.

It is an arithmetic number, because the mean of its divisors is an integer number (6539157).

Almost surely, 2^13078313 is an apocalyptic number.

It is an amenable number.

13078313 is a deficient number, since it is larger than the sum of its proper divisors (1).

13078313 is an equidigital number, since it uses as much as digits as its factorization.

13078313 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 13078313 is about 3616.3950282014. The cubic root of 13078313 is about 235.6046778693.

The spelling of 13078313 in words is "thirteen million, seventy-eight thousand, three hundred thirteen".