3122111331 has 16 divisors (see below), whose sum is σ = 4868790400. Its totient is φ = 1971859464.

The previous prime is 3122111327. The next prime is 3122111413. The reversal of 3122111331 is 1331112213.

3122111331 is a `hidden beast` number, since 312 + 21 + 1 + 1 + 331 = 666.

It is not a de Polignac number, because 3122111331 - 2² = 3122111327 is a prime.

It is a super-2 number, since 2×3122111331² = 19495158326317183122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3122111431) 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 15 ways as a sum of consecutive naturals, for example, 3042481 + ... + 3043506.

It is an arithmetic number, because the mean of its divisors is an integer number (304299400).

Almost surely, 2^3122111331 is an apocalyptic number.

3122111331 is a deficient number, since it is larger than the sum of its proper divisors (1746679069).

3122111331 is a wasteful number, since it uses less digits than its factorization.

3122111331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6086015 (or 6086009 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 3122111331 is about 55875.8564229668. The cubic root of 3122111331 is about 1461.5582491963.

Adding to 3122111331 its reverse (1331112213), we get a palindrome (4453223544).

The spelling of 3122111331 in words is "three billion, one hundred twenty-two million, one hundred eleven thousand, three hundred thirty-one".