3149813 has 2 divisors, whose sum is σ = 3149814. Its totient is φ = 3149812.

The previous prime is 3149807. The next prime is 3149821. The reversal of 3149813 is 3189413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2896804 + 253009 = 1702^2 + 503^2 .

It is an emirp because it is prime and its reverse (3189413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3149813 - 2⁶ = 3149749 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3149803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1574906 + 1574907.

It is an arithmetic number, because the mean of its divisors is an integer number (1574907).

Almost surely, 2^3149813 is an apocalyptic number.

It is an amenable number.

3149813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3149813 is an equidigital number, since it uses as much as digits as its factorization.

3149813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 3149813 is about 1774.7712528661. The cubic root of 3149813 is about 146.5868200603.

The spelling of 3149813 in words is "three million, one hundred forty-nine thousand, eight hundred thirteen".