3111131121 has 32 divisors (see below), whose sum is σ = 5037666048. Its totient is φ = 1667205120.

The previous prime is 3111131099. The next prime is 3111131129. The reversal of 3111131121 is 1211311113.

It is not a de Polignac number, because 3111131121 - 2⁶ = 3111131057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3111131121.

It is not an unprimeable number, because it can be changed into a prime (3111131129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84811 + ... + 115823.

It is an arithmetic number, because the mean of its divisors is an integer number (157427064).

Almost surely, 2^3111131121 is an apocalyptic number.

It is an amenable number.

3111131121 is a deficient number, since it is larger than the sum of its proper divisors (1926534927).

3111131121 is a wasteful number, since it uses less digits than its factorization.

3111131121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31321.

The product of its digits is 18, while the sum is 15.

The square root of 3111131121 is about 55777.5144749208. The cubic root of 3111131121 is about 1459.8428430639.

Adding to 3111131121 its reverse (1211311113), we get a palindrome (4322442234).

The spelling of 3111131121 in words is "three billion, one hundred eleven million, one hundred thirty-one thousand, one hundred twenty-one".