3161993 has 2 divisors, whose sum is σ = 3161994. Its totient is φ = 3161992.

The previous prime is 3161953. The next prime is 3162001. The reversal of 3161993 is 3991613.

3161993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3108169 + 53824 = 1763^2 + 232^2 .

It is an emirp because it is prime and its reverse (3991613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3161993 - 2¹⁴ = 3145609 is a prime.

It is not a weakly prime, because it can be changed into another prime (3161953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1580996 + 1580997.

It is an arithmetic number, because the mean of its divisors is an integer number (1580997).

Almost surely, 2^3161993 is an apocalyptic number.

It is an amenable number.

3161993 is a deficient number, since it is larger than the sum of its proper divisors (1).

3161993 is an equidigital number, since it uses as much as digits as its factorization.

3161993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4374, while the sum is 32.

The square root of 3161993 is about 1778.1993701495. The cubic root of 3161993 is about 146.7755223785.

The spelling of 3161993 in words is "three million, one hundred sixty-one thousand, nine hundred ninety-three".