3191143 has 4 divisors (see below), whose sum is σ = 3238840. Its totient is φ = 3143448.

The previous prime is 3191137. The next prime is 3191161. The reversal of 3191143 is 3411913.

3191143 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, and also an emirpimes, since its reverse is a distinct semiprime: 3411913 = 61 ⋅55933.

It is a cyclic number.

It is not a de Polignac number, because 3191143 - 2¹³ = 3182951 is a prime.

It is a super-3 number, since 3×3191143³ = 97489996053330603621, which contains 333 as substring.

It is a Duffinian number.

3191143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3191113) 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, 23748 + ... + 23881.

It is an arithmetic number, because the mean of its divisors is an integer number (809710).

Almost surely, 2^3191143 is an apocalyptic number.

3191143 is a deficient number, since it is larger than the sum of its proper divisors (47697).

3191143 is an equidigital number, since it uses as much as digits as its factorization.

3191143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47696.

The product of its digits is 324, while the sum is 22.

The square root of 3191143 is about 1786.3770598617. The cubic root of 3191143 is about 147.2251782063.

The spelling of 3191143 in words is "three million, one hundred ninety-one thousand, one hundred forty-three".