3111641 has 4 divisors (see below), whose sum is σ = 3351012. Its totient is φ = 2872272.

The previous prime is 3111631. The next prime is 3111653. The reversal of 3111641 is 1461113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1461113 = 89 ⋅16417.

It can be written as a sum of positive squares in 2 ways, for example, as 1210000 + 1901641 = 1100^2 + 1379^2 .

It is not a de Polignac number, because 3111641 - 2¹⁰ = 3110617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3111631) 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, 119666 + ... + 119691.

It is an arithmetic number, because the mean of its divisors is an integer number (837753).

Almost surely, 2^3111641 is an apocalyptic number.

It is an amenable number.

3111641 is a deficient number, since it is larger than the sum of its proper divisors (239371).

3111641 is a wasteful number, since it uses less digits than its factorization.

3111641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239370.

The product of its digits is 72, while the sum is 17.

The square root of 3111641 is about 1763.9844103620. The cubic root of 3111641 is about 145.9922589253.

Adding to 3111641 its reverse (1461113), we get a palindrome (4572754).

The spelling of 3111641 in words is "three million, one hundred eleven thousand, six hundred forty-one".