3111121 has 12 divisors (see below), whose sum is σ = 3458700. Its totient is φ = 2795520.

The previous prime is 3111107. The next prime is 3111131. The reversal of 3111121 is 1211113.

It can be written as a sum of positive squares in 6 ways, for example, as 1040400 + 2070721 = 1020^2 + 1439^2 .

It is not a de Polignac number, because 3111121 - 2⁷ = 3110993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3111098 and 3111107.

It is not an unprimeable number, because it can be changed into a prime (3111131) 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 11 ways as a sum of consecutive naturals, for example, 6705 + ... + 7153.

It is an arithmetic number, because the mean of its divisors is an integer number (288225).

Almost surely, 2^3111121 is an apocalyptic number.

It is an amenable number.

3111121 is a deficient number, since it is larger than the sum of its proper divisors (347579).

3111121 is a wasteful number, since it uses less digits than its factorization.

3111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 503 counting only the distinct ones).

The product of its digits is 6, while the sum is 10.

The square root of 3111121 is about 1763.8370106107. The cubic root of 3111121 is about 145.9841260029.

Adding to 3111121 its reverse (1211113), we get a palindrome (4322234).

It can be divided in two parts, 311112 and 1, that added together give a palindrome (311113).

The spelling of 3111121 in words is "three million, one hundred eleven thousand, one hundred twenty-one".