3145817 has 2 divisors, whose sum is σ = 3145818. Its totient is φ = 3145816.

The previous prime is 3145801. The next prime is 3145819. The reversal of 3145817 is 7185413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2611456 + 534361 = 1616^2 + 731^2 .

It is a cyclic number.

It is not a de Polignac number, because 3145817 - 2⁴ = 3145801 is a prime.

Together with 3145819, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3145817.

It is not a weakly prime, because it can be changed into another prime (3145819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572908 + 1572909.

It is an arithmetic number, because the mean of its divisors is an integer number (1572909).

Almost surely, 2^3145817 is an apocalyptic number.

It is an amenable number.

3145817 is a deficient number, since it is larger than the sum of its proper divisors (1).

3145817 is an equidigital number, since it uses as much as digits as its factorization.

3145817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

The square root of 3145817 is about 1773.6451167018. The cubic root of 3145817 is about 146.5248048639.

The spelling of 3145817 in words is "three million, one hundred forty-five thousand, eight hundred seventeen".