3121330343 has 4 divisors (see below), whose sum is σ = 3124015368. Its totient is φ = 3118645320.

The previous prime is 3121330327. The next prime is 3121330363. The reversal of 3121330343 is 3430331213.

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 3121330343 - 2⁴ = 3121330327 is a prime.

It is a super-2 number, since 2×3121330343² = 19485406220264995298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121330363) 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, 1340768 + ... + 1343093.

It is an arithmetic number, because the mean of its divisors is an integer number (781003842).

Almost surely, 2^3121330343 is an apocalyptic number.

3121330343 is a deficient number, since it is larger than the sum of its proper divisors (2685025).

3121330343 is a wasteful number, since it uses less digits than its factorization.

3121330343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685024.

The product of its (nonzero) digits is 1944, while the sum is 23.

The square root of 3121330343 is about 55868.8673860496. The cubic root of 3121330343 is about 1461.4363707062.

Adding to 3121330343 its reverse (3430331213), we get a palindrome (6551661556).

The spelling of 3121330343 in words is "three billion, one hundred twenty-one million, three hundred thirty thousand, three hundred forty-three".