3121344011 has 4 divisors (see below), whose sum is σ = 3123008832. Its totient is φ = 3119679192.

The previous prime is 3121343989. The next prime is 3121344047. The reversal of 3121344011 is 1104431213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1104431213 = 1471 ⋅750803.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121344011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121347011) 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 3 ways as a sum of consecutive naturals, for example, 829595 + ... + 833348.

It is an arithmetic number, because the mean of its divisors is an integer number (780752208).

Almost surely, 2^3121344011 is an apocalyptic number.

3121344011 is a deficient number, since it is larger than the sum of its proper divisors (1664821).

3121344011 is a wasteful number, since it uses less digits than its factorization.

3121344011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664820.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 3121344011 is about 55868.9897080661. The cubic root of 3121344011 is about 1461.4385038654.

Adding to 3121344011 its reverse (1104431213), we get a palindrome (4225775224).

The spelling of 3121344011 in words is "three billion, one hundred twenty-one million, three hundred forty-four thousand, eleven".