3111409 has 4 divisors (see below), whose sum is σ = 3555904. Its totient is φ = 2666916.

The previous prime is 3111403. The next prime is 3111419. The reversal of 3111409 is 9041113.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9041113 = 937 ⋅9649.

It is not a de Polignac number, because 3111409 - 2⁷ = 3111281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3111403) 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, 222237 + ... + 222250.

It is an arithmetic number, because the mean of its divisors is an integer number (888976).

Almost surely, 2^3111409 is an apocalyptic number.

It is an amenable number.

3111409 is a deficient number, since it is larger than the sum of its proper divisors (444495).

3111409 is an equidigital number, since it uses as much as digits as its factorization.

3111409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444494.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 3111409 is about 1763.9186489178. The cubic root of 3111409 is about 145.9886305026.

The spelling of 3111409 in words is "three million, one hundred eleven thousand, four hundred nine".