3111949 has 4 divisors (see below), whose sum is σ = 3158464. Its totient is φ = 3065436.

The previous prime is 3111931. The next prime is 3111973. The reversal of 3111949 is 9491113.

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: 9491113 = 2371 ⋅4003.

It is a cyclic number.

It is not a de Polignac number, because 3111949 - 2⁷ = 3111821 is a prime.

It is a Duffinian number.

3111949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3111349) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 23157 + ... + 23290.

It is an arithmetic number, because the mean of its divisors is an integer number (789616).

Almost surely, 2^3111949 is an apocalyptic number.

It is an amenable number.

3111949 is a deficient number, since it is larger than the sum of its proper divisors (46515).

3111949 is an equidigital number, since it uses as much as digits as its factorization.

3111949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46514.

The product of its digits is 972, while the sum is 28.

The square root of 3111949 is about 1764.0717105605. The cubic root of 3111949 is about 145.9970756905.

The spelling of 3111949 in words is "three million, one hundred eleven thousand, nine hundred forty-nine".