3191243 has 4 divisors (see below), whose sum is σ = 3481368. Its totient is φ = 2901120.

The previous prime is 3191219. The next prime is 3191261. The reversal of 3191243 is 3421913.

3191243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3191243 - 2⁶ = 3191179 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3191263) 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 in 3 ways as a sum of consecutive naturals, for example, 145046 + ... + 145067.

It is an arithmetic number, because the mean of its divisors is an integer number (870342).

Almost surely, 2^3191243 is an apocalyptic number.

3191243 is a deficient number, since it is larger than the sum of its proper divisors (290125).

3191243 is a wasteful number, since it uses less digits than its factorization.

3191243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290124.

The product of its digits is 648, while the sum is 23.

The square root of 3191243 is about 1786.4050492539. The cubic root of 3191243 is about 147.2267160423.

The spelling of 3191243 in words is "three million, one hundred ninety-one thousand, two hundred forty-three".