3111345 has 32 divisors (see below), whose sum is σ = 5827200. Its totient is φ = 1570752.

The previous prime is 3111343. The next prime is 3111349. The reversal of 3111345 is 5431113.

It is not a de Polignac number, because 3111345 - 2¹ = 3111343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3111341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1959 + ... + 3171.

It is an arithmetic number, because the mean of its divisors is an integer number (182100).

Almost surely, 2^3111345 is an apocalyptic number.

It is an amenable number.

3111345 is a deficient number, since it is larger than the sum of its proper divisors (2715855).

3111345 is a wasteful number, since it uses less digits than its factorization.

3111345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246 (or 1240 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 3111345 is about 1763.9005073983. The cubic root of 3111345 is about 145.9876295267.

Adding to 3111345 its reverse (5431113), we get a palindrome (8542458).

The spelling of 3111345 in words is "three million, one hundred eleven thousand, three hundred forty-five".