3121193 has 2 divisors, whose sum is σ = 3121194. Its totient is φ = 3121192.

The previous prime is 3121189. The next prime is 3121199. The reversal of 3121193 is 3911213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1926544 + 1194649 = 1388^2 + 1093^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121193 - 2² = 3121189 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 (3121199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560596 + 1560597.

It is an arithmetic number, because the mean of its divisors is an integer number (1560597).

Almost surely, 2^3121193 is an apocalyptic number.

It is an amenable number.

3121193 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121193 is an equidigital number, since it uses as much as digits as its factorization.

3121193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 20.

The square root of 3121193 is about 1766.6898426153. The cubic root of 3121193 is about 146.1414935295.

Adding to 3121193 its sum of digits (20), we get a palindrome (3121213).

The spelling of 3121193 in words is "three million, one hundred twenty-one thousand, one hundred ninety-three".