3121404111 has 24 divisors (see below), whose sum is σ = 5154258720. Its totient is φ = 1783152576.

The previous prime is 3121404089. The next prime is 3121404149. The reversal of 3121404111 is 1114041213.

It is not a de Polignac number, because 3121404111 - 2⁵ = 3121404079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121404161) 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 23 ways as a sum of consecutive naturals, for example, 429141 + ... + 436353.

It is an arithmetic number, because the mean of its divisors is an integer number (214760780).

Almost surely, 2^3121404111 is an apocalyptic number.

3121404111 is a deficient number, since it is larger than the sum of its proper divisors (2032854609).

3121404111 is a wasteful number, since it uses less digits than its factorization.

3121404111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14095 (or 14092 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 3121404111 is about 55869.5275709398. The cubic root of 3121404111 is about 1461.4478835738.

Adding to 3121404111 its reverse (1114041213), we get a palindrome (4235445324).

The spelling of 3121404111 in words is "three billion, one hundred twenty-one million, four hundred four thousand, one hundred eleven".