3122111311 has 4 divisors (see below), whose sum is σ = 3405939624. Its totient is φ = 2838283000.

The previous prime is 3122111303. The next prime is 3122111327. The reversal of 3122111311 is 1131112213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3122111311 - 2³ = 3122111303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3122151311) 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, 141914140 + ... + 141914161.

It is an arithmetic number, because the mean of its divisors is an integer number (851484906).

Almost surely, 2^3122111311 is an apocalyptic number.

3122111311 is a deficient number, since it is larger than the sum of its proper divisors (283828313).

3122111311 is a wasteful number, since it uses less digits than its factorization.

3122111311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283828312.

The product of its digits is 36, while the sum is 16.

The square root of 3122111311 is about 55875.8562439986. The cubic root of 3122111311 is about 1461.5582460755.

Adding to 3122111311 its reverse (1131112213), we get a palindrome (4253223524).

The spelling of 3122111311 in words is "three billion, one hundred twenty-two million, one hundred eleven thousand, three hundred eleven".