3111143 has 4 divisors (see below), whose sum is σ = 3555600. Its totient is φ = 2666688.

The previous prime is 3111137. The next prime is 3111151. The reversal of 3111143 is 3411113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3411113 = 743 ⋅4591.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3111143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3111343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222218 + ... + 222231.

It is an arithmetic number, because the mean of its divisors is an integer number (888900).

Almost surely, 2^3111143 is an apocalyptic number.

3111143 is a deficient number, since it is larger than the sum of its proper divisors (444457).

3111143 is an equidigital number, since it uses as much as digits as its factorization.

3111143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444456.

The product of its digits is 36, while the sum is 14.

The square root of 3111143 is about 1763.8432470035. The cubic root of 3111143 is about 145.9844701065.

Adding to 3111143 its reverse (3411113), we get a palindrome (6522256).

The spelling of 3111143 in words is "three million, one hundred eleven thousand, one hundred forty-three".