13312493 has 2 divisors, whose sum is σ = 13312494. Its totient is φ = 13312492.

The previous prime is 13312477. The next prime is 13312517. The reversal of 13312493 is 39421331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11276164 + 2036329 = 3358^2 + 1427^2 .

It is an emirp because it is prime and its reverse (39421331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13312493 - 2⁴ = 13312477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13312433) 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, 6656246 + 6656247.

It is an arithmetic number, because the mean of its divisors is an integer number (6656247).

Almost surely, 2^13312493 is an apocalyptic number.

It is an amenable number.

13312493 is a deficient number, since it is larger than the sum of its proper divisors (1).

13312493 is an equidigital number, since it uses as much as digits as its factorization.

13312493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 26.

The square root of 13312493 is about 3648.6289205673. The cubic root of 13312493 is about 237.0026111387.

The spelling of 13312493 in words is "thirteen million, three hundred twelve thousand, four hundred ninety-three".