3121344121 has 4 divisors (see below), whose sum is σ = 3567250432. Its totient is φ = 2675437812.

The previous prime is 3121344113. The next prime is 3121344131. The reversal of 3121344121 is 1214431213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3121344121 - 2³ = 3121344113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121344092 and 3121344101.

It is not an unprimeable number, because it can be changed into a prime (3121344131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222953145 + ... + 222953158.

It is an arithmetic number, because the mean of its divisors is an integer number (891812608).

Almost surely, 2^3121344121 is an apocalyptic number.

It is an amenable number.

3121344121 is a deficient number, since it is larger than the sum of its proper divisors (445906311).

3121344121 is an equidigital number, since it uses as much as digits as its factorization.

3121344121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445906310.

The product of its digits is 576, while the sum is 22.

The square root of 3121344121 is about 55868.9906925121. The cubic root of 3121344121 is about 1461.4385210330.

Adding to 3121344121 its reverse (1214431213), we get a palindrome (4335775334).

The spelling of 3121344121 in words is "three billion, one hundred twenty-one million, three hundred forty-four thousand, one hundred twenty-one".