3111445 has 8 divisors (see below), whose sum is σ = 3747744. Its totient is φ = 2479824.

The previous prime is 3111431. The next prime is 3111457. The reversal of 3111445 is 5441113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3111445 - 2¹¹ = 3109397 is a prime.

It is a Duffinian number.

3111445 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522 + ... + 2548.

It is an arithmetic number, because the mean of its divisors is an integer number (468468).

Almost surely, 2^3111445 is an apocalyptic number.

It is an amenable number.

3111445 is a deficient number, since it is larger than the sum of its proper divisors (636299).

3111445 is a wasteful number, since it uses less digits than its factorization.

3111445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339.

The product of its digits is 240, while the sum is 19.

The square root of 3111445 is about 1763.9288534405. The cubic root of 3111445 is about 145.9891935456.

Adding to 3111445 its reverse (5441113), we get a palindrome (8552558).

It can be divided in two parts, 31 and 11445, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 3111445 in words is "three million, one hundred eleven thousand, four hundred forty-five".