3121313213 has 8 divisors (see below), whose sum is σ = 3227508480. Its totient is φ = 3015462240.

The previous prime is 3121313201. The next prime is 3121313263. The reversal of 3121313213 is 3123131213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3121313213 - 2¹⁰ = 3121312189 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 (3121313263) 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 7 ways as a sum of consecutive naturals, for example, 67568 + ... + 103961.

It is an arithmetic number, because the mean of its divisors is an integer number (403438560).

Almost surely, 2^3121313213 is an apocalyptic number.

It is an amenable number.

3121313213 is a deficient number, since it is larger than the sum of its proper divisors (106195267).

3121313213 is a wasteful number, since it uses less digits than its factorization.

3121313213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172147.

The product of its digits is 324, while the sum is 20.

The square root of 3121313213 is about 55868.7140804225. The cubic root of 3121313213 is about 1461.4336972254.

Adding to 3121313213 its reverse (3123131213), we get a palindrome (6244444426).

The spelling of 3121313213 in words is "three billion, one hundred twenty-one million, three hundred thirteen thousand, two hundred thirteen".